diff --git a/src/pytorch_lightning/CHANGELOG.md b/src/pytorch_lightning/CHANGELOG.md
index b20547fb25696..12fa38817fea8 100644
--- a/src/pytorch_lightning/CHANGELOG.md
+++ b/src/pytorch_lightning/CHANGELOG.md
@@ -4,6 +4,14 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
+
+## [unreleased] - 2022-MM-DD
+
+### Changed
+
+- Moved the warning about saving nn.Module in `save_hyperparameters()` to before the deepcopy ([#15132](https://github.com/Lightning-AI/lightning/pull/15132))
+
+
 ## [1.8.0] - 2022-MM-DD
 
 
diff --git a/src/pytorch_lightning/utilities/parsing.py b/src/pytorch_lightning/utilities/parsing.py
index 87d43791e5fe5..eed889716f88f 100644
--- a/src/pytorch_lightning/utilities/parsing.py
+++ b/src/pytorch_lightning/utilities/parsing.py
@@ -256,8 +256,6 @@ def save_hyperparameters(
 
     # `hparams` are expected here
     obj._set_hparams(hp)
-    # make deep copy so there is not other runtime changes reflected
-    obj._hparams_initial = copy.deepcopy(obj._hparams)
 
     for k, v in obj._hparams.items():
         if isinstance(v, nn.Module):
@@ -266,6 +264,9 @@ def save_hyperparameters(
                 f" It is recommended to ignore them using `self.save_hyperparameters(ignore=[{k!r}])`."
             )
 
+    # make a deep copy so there are no other runtime changes reflected
+    obj._hparams_initial = copy.deepcopy(obj._hparams)
+
 
 class AttributeDict(Dict):
     """Extended dictionary accessible with dot notation.