diff --git a/delphi/latents/cache.py b/delphi/latents/cache.py
index 4dfb75aa..6e9a3c68 100644
--- a/delphi/latents/cache.py
+++ b/delphi/latents/cache.py
@@ -282,18 +282,14 @@ def run(self, n_tokens: int, tokens: token_tensor_type):
                                 latents
                             )
                             self.cache.add(sae_latents, batch, batch_number, hookpoint)
-                            firing_counts = (sae_latents > 0).sum((0, 1))
+                            firing_counts = (sae_latents.cpu() > 0).sum((0, 1))
                             if self.width is None:
                                 self.width = sae_latents.shape[2]
 
                             if hookpoint not in self.hookpoint_firing_counts:
-                                self.hookpoint_firing_counts[hookpoint] = (
-                                    firing_counts.cpu()
-                                )
+                                self.hookpoint_firing_counts[hookpoint] = firing_counts
                             else:
-                                self.hookpoint_firing_counts[
-                                    hookpoint
-                                ] += firing_counts.cpu()
+                                self.hookpoint_firing_counts[hookpoint] += firing_counts
 
                 # Update the progress bar
                 pbar.update(1)