diff --git a/src/DiffEntityComparison.php b/src/DiffEntityComparison.php
index 665f170..6f1b079 100644
--- a/src/DiffEntityComparison.php
+++ b/src/DiffEntityComparison.php
@@ -268,15 +268,34 @@ class DiffEntityComparison {
    *   The revision log message.
    */
   public function getRevisionDescription(ContentEntityInterface $revision, ContentEntityInterface $previous_revision = NULL) {
+    $auto_generated = FALSE;
+    $revision_summary = [];
     if ($revision instanceof RevisionLogInterface) {
       $revision_summary = Xss::filter($revision->getRevisionLogMessage());
-      if ($revision_summary == '') {
-        $revision_summary = $this->summary($revision, $previous_revision);
+      if ($revision_summary == '' && $previous_revision) {
+        $auto_generated = TRUE;
+        $revision_summary = [];
       }
     }
-    else {
-      $revision_summary = $this->summary($revision, $previous_revision);
+    elseif ($previous_revision) {
+      $auto_generated = TRUE;
     }
+    if ($auto_generated) {
+      $left_values = $this->summary($previous_revision);
+      $right_values = $this->summary($revision);
+      foreach ($right_values as $key => $value) {
+        if (isset($left_values[$key]) && $value != $left_values[$key]) {
+          $revision_summary[] = $value['label'];
+        }
+      }
+      if (count($revision_summary) > 0) {
+        $revision_summary = 'Changes on: ' . implode(', ', $revision_summary);
+      }
+      else {
+        $revision_summary = 'No changes.';
+      }
+    }
+
     return $revision_summary;
   }
 
@@ -285,31 +304,36 @@ class DiffEntityComparison {
    *
    * @param \Drupal\Core\Entity\ContentEntityInterface $revision
    *   The current revision.
-   * @param \Drupal\Core\Entity\ContentEntityInterface $previous_revision
-   *   (optional) The previous revision. Defaults to NULL.
    *
    * @return string
    *   The revision log message.
    */
-  protected function summary(ContentEntityInterface $revision, ContentEntityInterface $previous_revision = NULL) {
-    $summary = [];
-    if ($previous_revision) {
-      foreach ($previous_revision as $key => $value) {
-        if ($previous_revision->get($key)
-            ->getValue() != $revision->get($key)->getValue()
-          && $this->diffBuilderManager->getSelectedPluginForFieldDefinition($value->getFieldDefinition())
-        ) {
-          $summary[] = $value->getFieldDefinition()->getLabel();
-        }
-      }
-    }
-    if (count($summary) > 0) {
-      $summary = 'Changes on: ' . implode(', ', $summary);
-    }
-    else {
-      $summary = 'No changes.';
-    }
-    return $summary;
-  }
+   protected function summary(ContentEntityInterface $revision) {
+     $result = array();
+     $entity_type_id = $revision->getEntityTypeId();
+     // Loop through entity fields and transform every FieldItemList object
+     // into an array of strings according to field type specific settings.
+     foreach ($revision as $field_items) {
+       // Create a plugin instance for the field definition.
+       $plugin = $this->diffBuilderManager->createInstanceForFieldDefinition($field_items->getFieldDefinition());
+       if ($plugin) {
+         // Create the array with the fields of the entity. Recursive if the
+         // field contains entities.
+         if ($plugin instanceof FieldReferenceInterface) {
+           foreach ($plugin->getEntitiesToDiff($field_items) as $entity_key => $reference_entity) {
+             foreach($this->summary($reference_entity) as $key => $build) {
+               $result[$key] = $build;
+               $result[$key]['label'] = $field_items->getFieldDefinition()->getLabel() . ' > ' . $result[$key]['label'];
+             };
+           }
+         }
+         else {
+           $result[$revision->id() . ':' . $entity_type_id . '.' . $field_items->getName()] = $field_items->getValue();
+           $result[$revision->id() . ':' . $entity_type_id . '.' . $field_items->getName()]['label'] = $field_items->getFieldDefinition()->getLabel();
+         }
+       }
+     }
 
+     return $result;
+   }
 }