diff --git a/pagure/lib/git.py b/pagure/lib/git.py
index ab08826..90aa12d 100644
--- a/pagure/lib/git.py
+++ b/pagure/lib/git.py
@@ -152,7 +152,7 @@ def update_git(obj, repo, repofolder, objtype='ticket'):
 
     # Write down what changed
     with open(file_path, 'w') as stream:
-        stream.write(obj.to_json())
+        stream.write(json.dumps(obj.to_json()))
 
     # Retrieve the list of files that changed
     diff = new_repo.diff()