diff --git a/endpoints/registry.py b/endpoints/registry.py
index fc1575c1c..27c98d44e 100644
--- a/endpoints/registry.py
+++ b/endpoints/registry.py
@@ -128,7 +128,7 @@ def put_image_layer(namespace, repository, image_id):
   mark_path = store.image_mark_path(namespace, repository, image_id)
 
   if store.exists(layer_path) and not store.exists(mark_path):
-    abort(409, 'Image %(image_id)s already exists', issue='image-exists', image_id=image_id)
+    abort(409, 'Image already exists', issue='image-exists', image_id=image_id)
 
   input_stream = request.stream
   if request.headers.get('transfer-encoding') == 'chunked':
@@ -364,7 +364,7 @@ def put_image_json(namespace, repository, image_id):
   json_path = store.image_json_path(namespace, repository, image_id)
   mark_path = store.image_mark_path(namespace, repository, image_id)
   if store.exists(json_path) and not store.exists(mark_path):
-    abort(409, 'Image %(image_id)s already exists', issue='image-exists', image_id=image_id)
+    abort(409, 'Image already exists', issue='image-exists', image_id=image_id)
 
   # If we reach that point, it means that this is a new image or a retry
   # on a failed push
diff --git a/util/http.py b/util/http.py
index 123029960..02b07c410 100644
--- a/util/http.py
+++ b/util/http.py
@@ -47,11 +47,10 @@ def abort(status_code, message=None, issue=None, **kwargs):
 
   # Create the final response data and message.
   data = {}
+  data['error'] = message
+
   if issue_url:
     data['info_url'] = issue_url
-    message = message + '. For more information: ' + issue_url
-
-  data['error'] = message
 
   resp = jsonify(data)
   resp.status_code = status_code