diff --git a/core/modules/content_translation/content_translation.pages.inc b/core/modules/content_translation/content_translation.pages.inc
index 017da96..7ed5a3c 100644
--- a/core/modules/content_translation/content_translation.pages.inc
+++ b/core/modules/content_translation/content_translation.pages.inc
@@ -31,6 +31,7 @@ function content_translation_overview(EntityInterface $entity) {
   }
 
   $rows = array();
+  $show_source_column = FALSE;
 
   if (\Drupal::languageManager()->isMultilingual()) {
     // Determine whether the current entity is translatable.
@@ -43,10 +44,9 @@ function content_translation_overview(EntityInterface $entity) {
     }
 
     // Show source-language column if there are non-original source langcodes.
-    $additional_source_langcodes = array_filter($entity->translation, function ($a) use ($original) {
-      return isset($a['source']) && $a['source'] && $a['source'] != $original;
-    });
-    $show_source_column = count($additional_source_langcodes) > 0;
+    $show_source_column = !empty($entity->translation) && !empty(array_filter($entity->translation, function ($translation) use ($original) {
+      return !empty($translation['source']) && $translation['source'] != $original;
+    }));
 
     foreach ($languages as $language) {
       $language_name = $language->name;
@@ -144,7 +144,7 @@ function content_translation_overview(EntityInterface $entity) {
   // which entity this is.
   $build['#entity'] = $entity;
 
-  if (isset($show_source_column) && $show_source_column == TRUE) {
+  if ($show_source_column) {
     $header = array(t('Language'), t('Translation'), t('Source language'), t('Status'), t('Operations'));
   }
   else {