diff --git a/plugin/src/test/java/org/opensearch/ml/action/models/DeleteModelTransportActionTests.java b/plugin/src/test/java/org/opensearch/ml/action/models/DeleteModelTransportActionTests.java
index 37c6f8755f..bfc7f628ff 100644
--- a/plugin/src/test/java/org/opensearch/ml/action/models/DeleteModelTransportActionTests.java
+++ b/plugin/src/test/java/org/opensearch/ml/action/models/DeleteModelTransportActionTests.java
@@ -212,7 +212,7 @@ public void testDeleteRemoteModel_deleteModelController_failed() throws IOExcept
         deleteModelTransportAction.doExecute(null, mlModelDeleteRequest, actionListener);
         ArgumentCaptor<Exception> argumentCaptor = ArgumentCaptor.forClass(Exception.class);
         verify(actionListener).onFailure(argumentCaptor.capture());
-        assertEquals("Failed to delete model controller, please try again: test_id", argumentCaptor.getValue().getMessage());
+        assertEquals("Model is not all cleaned up, please try again: test_id", argumentCaptor.getValue().getMessage());
     }
 
     public void testDeleteLocalModel_deleteModelController_failed() throws IOException {