diff --git a/roop/core.py b/roop/core.py
index f392a2a..7a48f96 100755
--- a/roop/core.py
+++ b/roop/core.py
@@ -209,8 +209,8 @@ def start(preview_callback = None):
         process_video_multi_cores(args.source_img, args.frame_paths)
     else:
         process_video(args.source_img, args.frame_paths)
-    if args.gpu_vendor = 'nvidia':
-        torch.cuda.empty_cache() 
+    if args.gpu_vendor == 'nvidia':
+        torch.cuda.empty_cache() # prevent CUDA OOM when using ffmpeg cuda accel
     status("creating video...")
     create_video(video_name, exact_fps, output_dir)
     status("adding audio...")