diff --git a/plugin/src/main/java/org/opensearch/ml/action/remote/GetConnectorTransportAction.java b/plugin/src/main/java/org/opensearch/ml/action/remote/GetConnectorTransportAction.java
index 241e559659..54039dd900 100644
--- a/plugin/src/main/java/org/opensearch/ml/action/remote/GetConnectorTransportAction.java
+++ b/plugin/src/main/java/org/opensearch/ml/action/remote/GetConnectorTransportAction.java
@@ -86,7 +86,7 @@ protected void doExecute(Task task, ActionRequest request, ActionListener<MLConn
                         actionListener.onFailure(e);
                     }
                 } else {
-                    actionListener.onFailure(new MLResourceNotFoundException("Fail to find connector"));
+                    actionListener.onFailure(new IllegalArgumentException("Failed to find connector with the provided connector id: " + connectorId));
                 }
             }, e -> {
                 if (e instanceof IndexNotFoundException) {