diff --git a/src/Form/RevisionOverviewForm.php b/src/Form/RevisionOverviewForm.php
index 42cbb73..609511c 100755
--- a/src/Form/RevisionOverviewForm.php
+++ b/src/Form/RevisionOverviewForm.php
@@ -294,7 +294,7 @@ class RevisionOverviewForm extends FormBase {
     if ($revision_count > 1) {
       $build['submit'] = array(
         '#type' => 'submit',
-        '#value' => t('Compare'),
+        '#value' => t('Compare selection'),
         '#attributes' => array(
           'class' => array(
             'diff-button',
diff --git a/src/Tests/DiffAdminFormsTest.php b/src/Tests/DiffAdminFormsTest.php
index dca15df..25ef5e8 100644
--- a/src/Tests/DiffAdminFormsTest.php
+++ b/src/Tests/DiffAdminFormsTest.php
@@ -127,7 +127,7 @@ class DiffAdminFormsTest extends DiffTestBase {
     // Assert the diff display uses the classic layout.
     $node = $this->getNodeByTitle('greater_title');
     $this->drupalGet('node/' . $node->id() . '/revisions');
-    $this->drupalPostForm(NULL, [], t('Compare'));
+    $this->drupalPostForm(NULL, [], t('Compare selection'));
     $this->assertLink('Unified fields');
     $this->assertLink('Split fields');
     $this->assertLink('Raw');
@@ -144,7 +144,7 @@ class DiffAdminFormsTest extends DiffTestBase {
 
     // Assert the diff display uses the markdown layout.
     $this->drupalGet('node/' . $node->id() . '/revisions');
-    $this->drupalPostForm(NULL, [], t('Compare'));
+    $this->drupalPostForm(NULL, [], t('Compare selection'));
     $this->assertResponse(200);
     $this->assertNoLink('Unified fields');
     $this->assertLink('Split fields');
@@ -172,7 +172,7 @@ class DiffAdminFormsTest extends DiffTestBase {
 
     // Assert the diff display uses the single column layout.
     $this->drupalGet('node/' . $node->id() . '/revisions');
-    $this->drupalPostForm(NULL, [], t('Compare'));
+    $this->drupalPostForm(NULL, [], t('Compare selection'));
     $this->assertResponse(200);
     $this->assertLink('Unified fields');
     $this->assertNoLink('Split fields');
diff --git a/src/Tests/DiffPluginEntityTest.php b/src/Tests/DiffPluginEntityTest.php
index 0fc9558..9b90c17 100644
--- a/src/Tests/DiffPluginEntityTest.php
+++ b/src/Tests/DiffPluginEntityTest.php
@@ -88,7 +88,7 @@ class DiffPluginEntityTest extends DiffPluginTestBase {
 
     // Check differences between revisions.
     $this->clickLink(t('Revisions'));
-    $this->drupalPostForm(NULL, NULL, t('Compare'));
+    $this->drupalPostForm(NULL, NULL, t('Compare selection'));
     $this->assertText('Reference');
     $this->assertText('Article B');
     $this->assertText('Article C');
diff --git a/src/Tests/DiffPluginFileTest.php b/src/Tests/DiffPluginFileTest.php
index 11f1001..b97c8fd 100644
--- a/src/Tests/DiffPluginFileTest.php
+++ b/src/Tests/DiffPluginFileTest.php
@@ -109,7 +109,7 @@ class DiffPluginFileTest extends DiffPluginTestBase {
       'radios_left' => $revision1,
       'radios_right' => $revision3,
     ];
-    $this->drupalPostForm(NULL, $edit, t('Compare'));
+    $this->drupalPostForm(NULL, $edit, t('Compare selection'));
     $this->assertText('File');
     $this->assertText('File: text-1.txt');
     $this->assertText('File ID: 4');
@@ -200,7 +200,7 @@ class DiffPluginFileTest extends DiffPluginTestBase {
       'radios_left' => $revision1,
       'radios_right' => $revision3,
     ];
-    $this->drupalPostForm(NULL, $edit, t('Compare'));
+    $this->drupalPostForm(NULL, $edit, t('Compare selection'));
     $this->assertText('Image');
     $this->assertText('Image: image-test-transparent-indexed.gif');
     // Image title must be absent since it is not set in previous revisions.
@@ -218,7 +218,7 @@ class DiffPluginFileTest extends DiffPluginTestBase {
       'field_image[0][title]' => 'Image title updated',
     ];
     $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Save and keep published'));
-    $this->drupalPostForm('node/' . $node->id() . '/revisions', [], t('Compare'));
+    $this->drupalPostForm('node/' . $node->id() . '/revisions', [], t('Compare selection'));
     $rows = $this->xpath('//tbody/tr');
     // Image title and alternative text must be shown.
     $this->assertEqual(htmlspecialchars_decode(strip_tags($rows[2]->td[2]->asXML())), 'Alt: Image alt updated');
@@ -234,7 +234,7 @@ class DiffPluginFileTest extends DiffPluginTestBase {
     ];
     $this->drupalPostAjaxForm(NULL, $edit, 'node.field_image_plugin_settings_update');
     $this->drupalPostForm(NULL, [], t('Save'));
-    $this->drupalPostForm('node/' . $node->id() . '/revisions', [], t('Compare'));
+    $this->drupalPostForm('node/' . $node->id() . '/revisions', [], t('Compare selection'));
     // Alt and title must be hidden.
     $this->assertText('File ID: 2');
 
@@ -246,7 +246,7 @@ class DiffPluginFileTest extends DiffPluginTestBase {
     ];
     $this->drupalPostAjaxForm(NULL, $edit, 'node.field_image_plugin_settings_update');
     $this->drupalPostForm(NULL, [], t('Save'));
-    $this->drupalPostForm('node/' . $node->id() . '/revisions', [], t('Compare'));
+    $this->drupalPostForm('node/' . $node->id() . '/revisions', [], t('Compare selection'));
     // Alt and title must be hidden.
     $this->assertNoText('Alt: Image alt updated');
     $this->assertNoText('Alt: Image alt updated new');
@@ -261,7 +261,7 @@ class DiffPluginFileTest extends DiffPluginTestBase {
     ];
     $this->drupalPostAjaxForm(NULL, $edit, 'node.field_image_plugin_settings_update');
     $this->drupalPostForm(NULL, [], t('Save'));
-    $this->drupalPostForm('node/' . $node->id() . '/revisions', [], t('Compare'));
+    $this->drupalPostForm('node/' . $node->id() . '/revisions', [], t('Compare selection'));
     $this->assertText('Alt: Image alt updated');
     $this->assertText('Alt: Image alt updated new');
     $this->assertNoText('Title: Image title updated');
diff --git a/src/Tests/DiffPluginTest.php b/src/Tests/DiffPluginTest.php
index 1f1a7a9..ca00959 100644
--- a/src/Tests/DiffPluginTest.php
+++ b/src/Tests/DiffPluginTest.php
@@ -89,7 +89,7 @@ class DiffPluginTest extends DiffPluginTestBase {
 
     // Check the difference between the last two revisions.
     $this->clickLink(t('Revisions'));
-    $this->drupalPostForm(NULL, NULL, t('Compare'));
+    $this->drupalPostForm(NULL, NULL, t('Compare selection'));
 
     // "changed" field is not displayed since there is no plugin for it. This
     // should not break the revisions comparison display.
@@ -120,7 +120,7 @@ class DiffPluginTest extends DiffPluginTestBase {
 
     // Check the "Text Field No Access" field is not displayed.
     $this->drupalGet('node/'. $node->id() .'/revisions');
-    $this->drupalPostForm(NULL, [], t('Compare'));
+    $this->drupalPostForm(NULL, [], t('Compare selection'));
     $this->assertResponse(200);
     $this->assertNoText('field_diff_deny_access');
     $rows = $this->xpath('//tbody/tr');
@@ -159,7 +159,7 @@ class DiffPluginTest extends DiffPluginTestBase {
 
     // Check differences between revisions.
     $this->clickLink(t('Revisions'));
-    $this->drupalPostForm(NULL, [], t('Compare'));
+    $this->drupalPostForm(NULL, [], t('Compare selection'));
 
     // Check diff for an applicable field of testTextPlugin.
     $this->assertText('Test Applicable');
@@ -206,7 +206,7 @@ class DiffPluginTest extends DiffPluginTestBase {
     $this->assertText('Changes on: Body');
 
     // Assert the revision comparison.
-    $this->drupalPostForm(NULL, [], t('Compare'));
+    $this->drupalPostForm(NULL, [], t('Compare selection'));
     $this->assertNoText('No visible changes.');
     $rows = $this->xpath('//tbody/tr');
     $diff_row = $rows[1]->td;
@@ -223,7 +223,7 @@ class DiffPluginTest extends DiffPluginTestBase {
     ];
     $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Save and keep published'));
     $this->drupalGet('node/' . $node->id() . '/revisions');
-    $this->drupalPostForm(NULL, [], t('Compare'));
+    $this->drupalPostForm(NULL, [], t('Compare selection'));
     $this->assertNoText('No visible changes.');
     // Assert that empty rows also show a line number.
     $rows = $this->xpath('//tbody/tr');
diff --git a/src/Tests/DiffPluginVariousTest.php b/src/Tests/DiffPluginVariousTest.php
index d507960..639f08e 100644
--- a/src/Tests/DiffPluginVariousTest.php
+++ b/src/Tests/DiffPluginVariousTest.php
@@ -104,7 +104,7 @@ class DiffPluginVariousTest extends DiffPluginTestBase {
 
     // Check the difference between the last two revisions.
     $this->clickLink(t('Revisions'));
-    $this->drupalPostForm(NULL, NULL, t('Compare'));
+    $this->drupalPostForm(NULL, NULL, t('Compare selection'));
     $this->assertText('Comments');
     $this->assertText('Comments for this entity are open.');
     $this->assertText('Comments for this entity are closed.');
@@ -157,7 +157,7 @@ class DiffPluginVariousTest extends DiffPluginTestBase {
 
     // Check the difference between the last two revisions.
     $this->clickLink(t('Revisions'));
-    $this->drupalPostForm(NULL, NULL, t('Compare'));
+    $this->drupalPostForm(NULL, NULL, t('Compare selection'));
     $this->assertText('Email');
     $this->assertText('foo@example.com');
     $this->assertText('bar@example.com');
@@ -213,7 +213,7 @@ class DiffPluginVariousTest extends DiffPluginTestBase {
 
     // Compare the revisions.
     $this->drupalGet('node/' . $node->id() . '/revisions');
-    $this->drupalPostForm(NULL, NULL, t('Compare'));
+    $this->drupalPostForm(NULL, NULL, t('Compare selection'));
 
     // Assert that the timestamp field does not show a unix time format.
     $this->assertText('Timestamp test');
@@ -285,7 +285,7 @@ class DiffPluginVariousTest extends DiffPluginTestBase {
 
     // Check differences between revisions.
     $this->clickLink(t('Revisions'));
-    $this->drupalPostForm(NULL, [], t('Compare'));
+    $this->drupalPostForm(NULL, [], t('Compare selection'));
     $this->assertText('Link');
     $this->assertText('Google');
     $this->assertText('http://www.google.com');
@@ -346,7 +346,7 @@ class DiffPluginVariousTest extends DiffPluginTestBase {
 
     // Check differences between revisions.
     $this->clickLink(t('Revisions'));
-    $this->drupalPostForm(NULL, [], t('Compare'));
+    $this->drupalPostForm(NULL, [], t('Compare selection'));
     $this->assertText('List');
     $this->assertText('value_a');
     $this->assertText('value_b');
@@ -380,7 +380,7 @@ class DiffPluginVariousTest extends DiffPluginTestBase {
 
     // Check differences between revisions.
     $this->clickLink(t('Revisions'));
-    $this->drupalPostForm(NULL, [], t('Compare'));
+    $this->drupalPostForm(NULL, [], t('Compare selection'));
     $this->assertText('Text Field');
     $this->assertText('Text Long Field');
     $this->assertText('Foo');
@@ -422,7 +422,7 @@ class DiffPluginVariousTest extends DiffPluginTestBase {
 
     // Check differences between revisions.
     $this->clickLink(t('Revisions'));
-    $this->drupalPostForm(NULL, [], t('Compare'));
+    $this->drupalPostForm(NULL, [], t('Compare selection'));
     $this->assertText('Body');
     $this->assertText('Foo value');
     $this->assertText('Foo summary');
diff --git a/src/Tests/DiffRevisionTest.php b/src/Tests/DiffRevisionTest.php
index 30f7a16..d3cc315 100644
--- a/src/Tests/DiffRevisionTest.php
+++ b/src/Tests/DiffRevisionTest.php
@@ -82,7 +82,7 @@ class DiffRevisionTest extends DiffTestBase {
     $this->assertText('Initial revision.');
 
     // Compare the revisions in standard mode.
-    $this->drupalPostForm(NULL, NULL, t('Compare'));
+    $this->drupalPostForm(NULL, NULL, t('Compare selection'));
     $this->clickLink('Split fields');
     // Assert breadcrumbs are properly displayed.
     $this->assertRaw('<nav class="breadcrumb"');
@@ -236,7 +236,7 @@ class DiffRevisionTest extends DiffTestBase {
       'radios_left' => 3,
       'radios_right' => 4,
     ];
-    $this->drupalPostForm(NULL, $edit, t('Compare'));
+    $this->drupalPostForm(NULL, $edit, t('Compare selection'));
     $this->clickLink('Strip tags');
     // Check markdown layout is used when navigating between revisions.
     $rows = $this->xpath('//tbody/tr');
@@ -352,7 +352,7 @@ class DiffRevisionTest extends DiffTestBase {
     $this->assertEqual(count($rows), 1);
 
     // Compare the revisions and assert the first error message.
-    $this->drupalPostForm(NULL, NULL, t('Compare'));
+    $this->drupalPostForm(NULL, NULL, t('Compare selection'));
     $this->assertText('Multiple revisions are needed for comparison.');
 
     // Create another revision, changing the node language back to English.
@@ -375,7 +375,7 @@ class DiffRevisionTest extends DiffTestBase {
     $this->assertNoFieldChecked('edit-node-revisions-table-1-select-column-two');
 
     // Compare the revisions and assert the second error message.
-    $this->drupalPostForm(NULL, NULL, t('Compare'));
+    $this->drupalPostForm(NULL, NULL, t('Compare selection'));
     $this->assertText('Select two revisions to compare.');
 
     // Check the same revisions twice and compare.
@@ -383,7 +383,7 @@ class DiffRevisionTest extends DiffTestBase {
       'radios_left' => $revision3,
       'radios_right' => $revision3,
     ];
-    $this->drupalPostForm('/node/' . $node->id() . '/revisions', $edit, 'Compare');
+    $this->drupalPostForm('/node/' . $node->id() . '/revisions', $edit, 'Compare selection');
     // Assert the third error message.
     $this->assertText('Select different revisions to compare.');
 
@@ -392,7 +392,7 @@ class DiffRevisionTest extends DiffTestBase {
       'radios_left' => $revision3,
       'radios_right' => $revision1,
     ];
-    $this->drupalPostForm('/node/' . $node->id() . '/revisions', $edit, 'Compare');
+    $this->drupalPostForm('/node/' . $node->id() . '/revisions', $edit, 'Compare selection');
     $this->assertLinkByHref('node/' . $node->id() . '/revisions/view/' . $revision1 . '/' . $revision3);
   }
 
@@ -444,7 +444,7 @@ class DiffRevisionTest extends DiffTestBase {
     // Access revision of first node.
     $this->drupalGet('/node/' . $node_one->id());
     $this->clickLink(t('Revisions'));
-    $this->drupalPostForm(NULL, NULL, t('Compare'));
+    $this->drupalPostForm(NULL, NULL, t('Compare selection'));
     // Revision section should appear.
     $this->assertResponse(200);
   }
diff --git a/src/Tests/DiffViewModeTest.php b/src/Tests/DiffViewModeTest.php
index d3eeeeb..d6216e8 100644
--- a/src/Tests/DiffViewModeTest.php
+++ b/src/Tests/DiffViewModeTest.php
@@ -50,7 +50,7 @@ class DiffViewModeTest extends DiffTestBase {
 
     // Check the difference between the last two revisions.
     $this->drupalGet('node/' . $node->id() . '/revisions');
-    $this->drupalPostForm(NULL, [], t('Compare'));
+    $this->drupalPostForm(NULL, [], t('Compare selection'));
     $this->assertNoText('Body');
     $this->assertNoText('Foo');
     $this->assertNoText('Fighters');