diff --git a/face_swapper/src/training.py b/face_swapper/src/training.py
index ab880fb..64648dd 100644
--- a/face_swapper/src/training.py
+++ b/face_swapper/src/training.py
@@ -171,7 +171,7 @@ class FaceSwapperTrainer(LightningModule):
 		preview_cells = []
 		overlay_tensor = overlay_mask(output_tensor, mask_tensor)
 
-		for source_tensor, target_tensor, output_tensor, mask_tensor in zip(source_tensor[:preview_limit], target_tensor[:preview_limit], output_tensor[:preview_limit], mask_tensor[:preview_limit]):
+		for source_tensor, target_tensor, output_tensor, mask_tensor in zip(source_tensor[:preview_limit], target_tensor[:preview_limit], output_tensor[:preview_limit], overlay_tensor[:preview_limit]):
 			preview_cell = torch.cat([ source_tensor, target_tensor, output_tensor, overlay_tensor ], dim = 2)
 			preview_cells.append(preview_cell)