diff --git a/endpoints/common.py b/endpoints/common.py
index 0f9e027c8..77e155098 100644
--- a/endpoints/common.py
+++ b/endpoints/common.py
@@ -57,12 +57,14 @@ def common_login(db_user):
 
 @app.errorhandler(model.DataModelException)
 def handle_dme(ex):
-  return make_response(ex.message, 400)
+  logger.exception(ex)
+  return make_response('Internal Server Error', 500)
 
 
 @app.errorhandler(KeyError)
 def handle_dme_key_error(ex):
-  return make_response(ex.message, 400)
+  logger.exception(ex)
+  return make_response('Internal Server Error', 500)
 
 
 def generate_csrf_token():