diff --git a/kronfluence/module/tracked_module.py b/kronfluence/module/tracked_module.py
index 71c578f..c71280f 100644
--- a/kronfluence/module/tracked_module.py
+++ b/kronfluence/module/tracked_module.py
@@ -344,7 +344,7 @@ def backward_hook(output_gradient: torch.Tensor) -> None:
             # Compute and update pseudo-gradient covariance matrix in the backward pass.
             self._update_gradient_covariance_matrix(output_gradient.detach())
 
-        self._registered_hooks.append(self.original_module.register_forward_hook(forward_hook))
+        self._registered_hooks.append(self.register_forward_hook(forward_hook))
 
     def _release_covariance_matrices(self) -> None:
         """Clears the stored activation and pseudo-gradient covariance matrices from memory."""