diff --git a/core/modules/content_translation/content_translation.pages.inc b/core/modules/content_translation/content_translation.pages.inc
index 4d2fefc..26beb45 100644
--- a/core/modules/content_translation/content_translation.pages.inc
+++ b/core/modules/content_translation/content_translation.pages.inc
@@ -30,11 +30,10 @@ function content_translation_overview(EntityInterface $entity) {
     $rel[$name] = $entity->getSystemPath($name);
   }
 
-  $header = array(t('Language'), t('Translation'), t('Source language'), t('Status'), t('Operations'));
+  $header = array(t('Language'), t('Translation'), t('Status'), t('Operations'));
   $rows = array();
 
   if (\Drupal::languageManager()->isMultilingual()) {
-
     // Determine whether the current entity is translatable.
     $translatable = FALSE;
     foreach (\Drupal::entityManager()->getFieldDefinitions($entity->getEntityTypeId(), $entity->bundle()) as $field_definition) {
@@ -44,6 +43,24 @@ function content_translation_overview(EntityInterface $entity) {
       }
     }
 
+    // Collect source languages for translations (non-originals).
+    $language_as_source = array();
+    foreach ($languages as $language) {
+      $langcode = $language->id;
+      $is_original = $langcode == $original;
+      if (!$is_original && isset($translations[$langcode])) {
+        $source = isset($entity->translation[$langcode]['source']) ? $entity->translation[$langcode]['source'] : '';
+        $language_as_source[$source] = TRUE;
+      }
+    }
+
+    // Add the source-translation column if there is more than one source value.
+    $show_source_column = count($language_as_source) > 1;
+
+    if ($show_source_column) {
+      $header = array(t('Language'), t('Translation'), t('Source language'), t('Status'), t('Operations'));
+    }
+
     foreach ($languages as $language) {
       $language_name = $language->name;
       $langcode = $language->id;
@@ -125,7 +142,12 @@ function content_translation_overview(EntityInterface $entity) {
         $status = t('Not translated');
       }
 
-      $rows[] = array($language_name, $row_title, $source_name, $status, $operations);
+      if ($show_source_column) {
+        $rows[] = array($language_name, $row_title, $source_name, $status, $operations);
+      }
+      else {
+        $rows[] = array($language_name, $row_title, $status, $operations);
+      }
     }
   }
 
diff --git a/core/modules/content_translation/lib/Drupal/content_translation/Tests/ContentTranslationUITest.php b/core/modules/content_translation/lib/Drupal/content_translation/Tests/ContentTranslationUITest.php
index 96bf8b2..2ebc178 100644
--- a/core/modules/content_translation/lib/Drupal/content_translation/Tests/ContentTranslationUITest.php
+++ b/core/modules/content_translation/lib/Drupal/content_translation/Tests/ContentTranslationUITest.php
@@ -54,6 +54,8 @@ function testTranslationUI() {
     $this->assertTrue($entity, 'Entity found in the database.');
     $this->drupalGet($entity->getSystemPath());
     $this->assertResponse(200, 'Entity URL is valid.');
+    $this->drupalGet($entity->getSystemPath('drupal:content-translation-overview'));
+    $this->assertNoText('Source language', format_string('Source language column correctly hidden.'));
 
     $translation = $this->getTranslation($entity, $default_langcode);
     foreach ($values[$default_langcode] as $property => $value) {
@@ -74,20 +76,27 @@ function testTranslationUI() {
       $this->assertNoFieldByXPath('//select[@id="edit-langcode"]', NULL, 'Language selector correctly disabled on translations.');
     }
     $entity = entity_load($this->entityTypeId, $this->entityId, TRUE);
+    $this->drupalGet($entity->getSystemPath('drupal:content-translation-overview'));
+    $this->assertNoText('Source language', format_string('Source language column correctly hidden.'));
 
     // Switch the source language.
     $langcode = 'fr';
     $source_langcode = 'it';
     $edit = array('source_langcode[source]' => $source_langcode);
     $path = $langcode . '/' . $content_translation_path . '/add/' . $default_langcode . '/' . $langcode;
+    // This does not save anything, it merely reloads the form and fills in the
+    // fields with the values from the different source language.
     $this->drupalPostForm($path, $edit, t('Change'));
     $this->assertFieldByXPath("//input[@name=\"{$this->fieldName}[0][value]\"]", $values[$source_langcode][$this->fieldName][0]['value'], 'Source language correctly switched.');
 
     // Add another translation and mark the other ones as outdated.
     $values[$langcode] = $this->getNewEntityValues($langcode);
     $edit = $this->getEditValues($values, $langcode) + array('content_translation[retranslate]' => TRUE);
+    $path = $langcode . '/' . $content_translation_path . '/add/' . $source_langcode . '/' . $langcode;
     $this->drupalPostForm($path, $edit, $this->getFormSubmitActionForNewTranslation($entity, $langcode));
     $entity = entity_load($this->entityTypeId, $this->entityId, TRUE);
+    $this->drupalGet($entity->getSystemPath('drupal:content-translation-overview'));
+    $this->assertText('Source language', format_string('Source language column correctly shown.'));
 
     // Check that the entered values have been correctly stored.
     foreach ($values as $langcode => $property_values) {