diff --git a/pytorch_lightning/core/hooks.py b/pytorch_lightning/core/hooks.py
index 6565cad24f248..7361f6d55bdc3 100644
--- a/pytorch_lightning/core/hooks.py
+++ b/pytorch_lightning/core/hooks.py
@@ -19,8 +19,8 @@
 from torch.optim.optimizer import Optimizer
 
 from pytorch_lightning.utilities import move_data_to_device
-from pytorch_lightning.utilities.warnings import rank_zero_deprecation, rank_zero_warn
 from pytorch_lightning.utilities.types import EVAL_DATALOADERS, STEP_OUTPUT, TRAIN_DATALOADERS
+from pytorch_lightning.utilities.warnings import rank_zero_deprecation, rank_zero_warn
 
 
 class ModelHooks: