diff --git a/pvnet/models/base_model.py b/pvnet/models/base_model.py
index 07711a37..f903c05d 100644
--- a/pvnet/models/base_model.py
+++ b/pvnet/models/base_model.py
@@ -482,8 +482,12 @@ def validation_step(self, batch: dict, batch_idx):
         logged_losses["MSE_persistence/val"] = F.mse_loss(persistence, y)
         # Log for each timestep the persistence loss
         for i in range(self.forecast_len):
-            logged_losses[f"MAE_persistence/step_{i:03}/val"] = F.l1_loss(persistence[:, i], y[:, i])
-            logged_losses[f"MSE_persistence/step_{i:03}/val"] = F.mse_loss(persistence[:, i], y[:, i])
+            logged_losses[f"MAE_persistence/step_{i:03}/val"] = F.l1_loss(
+                persistence[:, i], y[:, i]
+            )
+            logged_losses[f"MSE_persistence/step_{i:03}/val"] = F.mse_loss(
+                persistence[:, i], y[:, i]
+            )
         # Get the losses in the format of {VAL>_horizon/step_000: 0.1, VAL>_horizon/step_001: 0.2}
         # for each step in the forecast horizon
         # This is needed for the custom plot