diff --git a/core/utils.py b/core/utils.py
index cc1e9b0..8b3e231 100644
--- a/core/utils.py
+++ b/core/utils.py
@@ -50,7 +50,7 @@ def add_audio(output_dir, target_path, video, keep_frames, output_file):
     save_to_ff, output_dir_ff = path(save_to), path(output_dir)
     os.system(f'ffmpeg -i "{output_dir_ff}{sep}output.mp4" -i "{output_dir_ff}{sep}{video}" -c:v copy -map 0:v:0 -map 1:a:0 -y "{save_to_ff}"')
     if not os.path.isfile(save_to):
-        shutil.move(f'{output_dir}{sep}output.mp4', save_to)
+        shutil.move(output_dir + "/output.mp4", save_to)
     if not keep_frames:
         shutil.rmtree(output_dir)