diff --git a/core/modules/field_ui/src/Tests/NumericFieldsUiTest.php b/core/modules/field_ui/src/Tests/NumericFieldsUiTest.php
index 8e51127..ab83778 100644
--- a/core/modules/field_ui/src/Tests/NumericFieldsUiTest.php
+++ b/core/modules/field_ui/src/Tests/NumericFieldsUiTest.php
@@ -72,9 +72,9 @@ public function testNumericFieldUI() {
     $this->drupalGet('admin/structure/types/manage/article/display');
     $settings_button = 'field_' . $this->fieldName . '_settings_edit';
     $this->drupalPostAjaxForm(NULL, array(), $settings_button);
-    $formatter_settings_prefix = 'fields[' . $this->fieldName . '][settings_edit_form][settings]';
+    $formatter_settings_prefix = 'fields[field_' . $this->fieldName . '][settings_edit_form][settings]';
     $edit = [$formatter_settings_prefix . '[format_plural]' => 'field'];
-    $this->drupalPostForm(NULL, array(), t('Save'));
+    $this->drupalPostForm(NULL, $edit, t('Save'));
 
     // Create a node with field value 1.
     $this->drupalGet('node/add/article');
@@ -85,7 +85,7 @@ public function testNumericFieldUI() {
     // prefix/suffix are/are not shown.
     $this->assertText('PluralPrefix');
     $this->assertText('PluralSuffix');
-    $this->drupalPostForm(NULL, ['title' => 'foobar', $this->fieldName => 1], t('Save and publish'));
+    $this->drupalPostForm(NULL, ['title[0][value]' => 'foobar', 'field_' . $this->fieldName . '[0][value]' => 1], t('Save'));
 
     // We should be on the node page. Verify that the singular
     // prefix/suffix are shown.
@@ -96,16 +96,16 @@ public function testNumericFieldUI() {
     $this->drupalPostAjaxForm(NULL, array(), $settings_button);
     $edit = array(
       $formatter_settings_prefix . '[format_plural]' => 'formatter',
-      $formatter_settings_prefix . '[format_plural_values][0]' => 'OverrideSingularP@count@OverrideSingularS',
-      $formatter_settings_prefix . '[format_plural_values][1]' => 'OverridePluralP@count@OverridePluralS',
+      $formatter_settings_prefix . '[format_plural_values][0]' => 'OverrideSingularP@countOverrideSingularS',
+      $formatter_settings_prefix . '[format_plural_values][1]' => 'OverridePluralP@countOverridePluralS',
     );
     $this->drupalPostAjaxForm(NULL, $edit, array('op' => t('Refresh')));
-    $this->drupalPostForm(NULL, t('Save'));
+    $this->drupalPostForm(NULL, array(), t('Save'));
 
     // Create another node, this time with a plural value, and verify the
     // formatting.
     $this->drupalGet('node/add/article');
-    $this->drupalPostForm(NULL, ['title' => 'barbaz', $this->fieldName => 2], t('Save and publish'));
+    $this->drupalPostForm(NULL, ['title[0][value]' => 'barbaz', 'field_' . $this->fieldName . '[0][value]'=> 2], t('Save'));
     $this->assertText('OverridePluralP2OverridePluralS');
 
   }