diff --git a/mlc/main.py b/mlc/main.py
index ef6278ed6..bb8c6d582 100644
--- a/mlc/main.py
+++ b/mlc/main.py
@@ -572,7 +572,7 @@ def cp(self, run_args):
 
         choice = 0
         if len(res['list']) == 0:
-            return {'return': 1, 'error': f'No {action_target} found for {src_id'}
+            return {'return': 1, 'error': f'No {action_target} found for {src_id}'}
         elif len(res['list']) > 1 and not run_args.get("quiet"):
             print(f"More than one {action_target} found for {src_id}:")