diff --git a/src/DiffEntityComparison.php b/src/DiffEntityComparison.php
index c0212fd..8d50878 100644
--- a/src/DiffEntityComparison.php
+++ b/src/DiffEntityComparison.php
@@ -244,21 +244,14 @@ class DiffEntityComparison {
    *   The revision log message.
    */
   public function getRevisionDescription(ContentEntityInterface $revision, ContentEntityInterface $previous_revision = NULL) {
-    $auto_generated = FALSE;
     $summary_elements = [];
     $revision_summary = '';
     // Check if the revision has a revision log message.
     if ($revision instanceof RevisionLogInterface) {
       $revision_summary = Xss::filter($revision->getRevisionLogMessage());
-      if ($revision_summary == '') {
-        $auto_generated = TRUE;
-      }
-    }
-    else {
-      $auto_generated = TRUE;
     }
     // Auto generate the revision log.
-    if ($auto_generated) {
+    if ($revision_summary == '') {
       // If there is a previous revision, load values of both revisions, loop
       // over the current revision fields.
       if ($previous_revision) {
diff --git a/src/DiffLayoutBase.php b/src/DiffLayoutBase.php
index ac81b79..85c423a 100644
--- a/src/DiffLayoutBase.php
+++ b/src/DiffLayoutBase.php
@@ -107,7 +107,7 @@ abstract class DiffLayoutBase extends PluginBase implements DiffLayoutInterface,
    */
   protected function buildRevisionLink(ContentEntityInterface $revision) {
     $entity_type_id = $revision->getEntityTypeId();
-    if ($revision instanceof RevisionLogInterface || $revision instanceof NodeInterface) {
+    if ($revision instanceof RevisionLogInterface) {
       $revision_date = $this->date->format($revision->getRevisionCreationTime(), 'short');
       $route_name = $entity_type_id != 'node' ? "entity.$entity_type_id.revisions_diff" : 'entity.node.revision';
       $revision_link = Link::fromTextAndUrl($revision_date, Url::fromRoute($route_name, [
@@ -171,15 +171,8 @@ abstract class DiffLayoutBase extends PluginBase implements DiffLayoutInterface,
    */
   protected function buildRevisionData(ContentEntityInterface $revision) {
     $entity_type_id = $revision->getEntityTypeId();
-    if ($revision instanceof RevisionLogInterface || $revision instanceof NodeInterface) {
-      $revision_log = '';
-
-      if ($revision instanceof RevisionLogInterface) {
-        $revision_log = Xss::filter($revision->getRevisionLogMessage());
-      }
-      elseif ($revision instanceof NodeInterface) {
-        $revision_log = $revision->revision_log->value;
-      }
+    if ($revision instanceof RevisionLogInterface) {
+      $revision_log = Xss::filter($revision->getRevisionLogMessage());
       $user_id = $revision->getRevisionUserId();
       $route_name = $entity_type_id != 'node' ? "entity.$entity_type_id.revisions_diff" : 'entity.node.revision';