diff --git a/core/modules/rdf/rdf.module b/core/modules/rdf/rdf.module
index 8c539c7729..a562a427d1 100644
--- a/core/modules/rdf/rdf.module
+++ b/core/modules/rdf/rdf.module
@@ -13,7 +13,9 @@
 /**
  * Override for PHP7.4 compatibility.
  */
-class_alias('Drupal\rdf\easyrdf\EasyRdf_ParsedUri', 'EasyRdf_ParsedUri');
+if (class_exists('\Drupal\rdf\CommonDataConverter')) {
+  class_alias('Drupal\rdf\easyrdf\EasyRdf_ParsedUri', 'EasyRdf_ParsedUri');
+}
 
 /**
  * Implements hook_help().