diff --git a/g3w-admin/qdjango/vector.py b/g3w-admin/qdjango/vector.py
index 1f04d8c17..b3863fa81 100644
--- a/g3w-admin/qdjango/vector.py
+++ b/g3w-admin/qdjango/vector.py
@@ -298,7 +298,7 @@ def get_forms(self):
                     'label': data['label']}
 
                 # If fields has a comment, set it as 'help' property
-                if data['comment']:
+                if 'comment' in data and data['comment']:
                     fields[self.layer_name]['fields'][field].update({
                         "help": data["comment"]
                     })