diff --git a/main.py b/main.py
index 9e0e8c4..4a42dff 100644
--- a/main.py
+++ b/main.py
@@ -163,9 +163,9 @@ def main():
     print(f"Different {len(different_files)} files")
 
     for key in tqdm.tqdm(new_files.union(different_files)):
+        source_object = os.path.join(source_prefix, key)
+        target_object = os.path.join(target_prefix, key)
         try:
-            source_object = os.path.join(source_prefix, key)
-            target_object = os.path.join(target_prefix, key)
             logging.info(
                 f"Moving {source_bucket}:{source_object} to "
                 f"{target_bucket}:{target_object}"
@@ -180,8 +180,8 @@ def main():
         except RetryError:
             logging.warning(
                 "Retry on moving"
-                "{source_bucket}:{source_object} to "
-                "{target_bucket}:{target_object}"
+                f"{source_bucket}:{source_object} to "
+                f"{target_bucket}:{target_object}"
             )