diff --git a/pytorch_lightning/models/trainer.py b/pytorch_lightning/models/trainer.py
index a485682c..ddb3dfe0 100644
--- a/pytorch_lightning/models/trainer.py
+++ b/pytorch_lightning/models/trainer.py
@@ -198,7 +198,6 @@ class Trainer(TrainerIO):
             # -----------------
             if self.data_parallel:
                 output = model(data_batch, batch_i)
-                pdb.set_trace()
                 output = reduce_distributed_output(output, len(self.data_parallel_device_ids))
             else:
                 output = model.validation_step(data_batch, batch_i)