diff --git a/ddaclient.py b/ddaclient.py
index 76667bd..b328c7a 100644
--- a/ddaclient.py
+++ b/ddaclient.py
@@ -210,7 +210,7 @@ def interpret_dda_worker_response(self, r):
 
         if data is None:
             raise WorkerException(
-                "data is None, the analysis failed unexcplicably")
+                "data is None, the analysis failed unexcplicably, raw response is: "+repr(r))
 
         if not isinstance(r['cached_path'], list):
             raise UnknownDDABackendProblem(