diff --git a/CHANGELOG.md b/CHANGELOG.md
index 602f020e00..9281443203 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -62,6 +62,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 - Fixed `DDPHPCAccelerator` hangs in DDP construction by calling `init_device` ([#5157](https://github.com/PyTorchLightning/pytorch-lightning/pull/5157))
 
 
+- Fixed `num_workers` for Windows example ([#5375](https://github.com/PyTorchLightning/pytorch-lightning/pull/5375))
+
+
 ## [1.1.3rc] - 2020-12-29
 
 ### Added
diff --git a/pl_examples/basic_examples/mnist_datamodule.py b/pl_examples/basic_examples/mnist_datamodule.py
index 17bf84fb29..8a607c2d1a 100644
--- a/pl_examples/basic_examples/mnist_datamodule.py
+++ b/pl_examples/basic_examples/mnist_datamodule.py
@@ -13,6 +13,7 @@
 # limitations under the License.
 import platform
 from typing import Optional
+from warnings import warn
 
 from torch.utils.data import DataLoader, random_split
 
@@ -55,8 +56,10 @@ class MNISTDataModule(LightningDataModule):
             normalize: If true applies image normalize
         """
         super().__init__(*args, **kwargs)
-        if platform.system() == "Windows":
-            # see: https://stackoverflow.com/a/59680818/4521646
+        if num_workers and platform.system() == "Windows":
+            # see: https://stackoverflow.com/a/59680818
+            warn(f"You have requested num_workers={num_workers} on Windows,"
+                 " but currently recommended is 0, so we set it for you")
             num_workers = 0
 
         self.dims = (1, 28, 28)