diff --git a/webpack_loader/loader.py b/webpack_loader/loader.py
index faf5fb42..6b725641 100644
--- a/webpack_loader/loader.py
+++ b/webpack_loader/loader.py
@@ -87,6 +87,8 @@ def get_bundle(self, bundle_name):
                 assets['file'] = ''
             if 'error' not in assets:
                 assets['error'] = 'Unknown Error'
+            if 'message' not in assets:
+                assets['message'] = ''
             error = u"""
             {error} in {file}
             {message}