diff --git a/pytorch_lightning/trainer/data_loading.py b/pytorch_lightning/trainer/data_loading.py
index 66b83fd4bfd005..50e86fd5c7ad2f 100644
--- a/pytorch_lightning/trainer/data_loading.py
+++ b/pytorch_lightning/trainer/data_loading.py
@@ -87,9 +87,8 @@ def auto_add_sampler(self, dataloader: DataLoader, train: bool) -> DataLoader:
             return dataloader
 
         need_dist_sampler = self.use_ddp or self.use_ddp2 or self.use_tpu
-        no_sampler_added = dataloader.sampler is None
 
-        if need_dist_sampler and no_sampler_added:
+        if need_dist_sampler:
 
             skip_keys = ['sampler', 'batch_sampler', 'dataset_kind']