diff --git a/Source/GSTLS.m b/Source/GSTLS.m
index 6a8781a84..0f529e1d0 100644
--- a/Source/GSTLS.m
+++ b/Source/GSTLS.m
@@ -1530,6 +1530,8 @@ retrieve_callback(gnutls_session_t session,
     }
   else
     {
+      NSLog(@"Certificates retrieved for sending to peer -\n"
+	@"None: not a request for an X509 certificate.");
       return -1;
     }
 }