diff --git a/pytorch_lightning/core/datamodule.py b/pytorch_lightning/core/datamodule.py
index 9e9f641409..657b35e9fe 100644
--- a/pytorch_lightning/core/datamodule.py
+++ b/pytorch_lightning/core/datamodule.py
@@ -317,7 +317,7 @@ class LightningDataModule(object, metaclass=_DataModuleWrapper):  # pragma: no c
         depr_arg_names = blacklist + added_args
         depr_arg_names = set(depr_arg_names)
 
-        allowed_types = (str, float, int, bool)
+        allowed_types = (str, int, float, bool)
 
         # TODO: get "help" from docstring :)
         for arg, arg_types, arg_default in (
diff --git a/pytorch_lightning/trainer/trainer.py b/pytorch_lightning/trainer/trainer.py
index 8b45d10986..7fc8b93b4d 100644
--- a/pytorch_lightning/trainer/trainer.py
+++ b/pytorch_lightning/trainer/trainer.py
@@ -736,7 +736,7 @@ class Trainer(
         blacklist = ['kwargs']
         depr_arg_names = cls.get_deprecated_arg_names() + blacklist
 
-        allowed_types = (str, float, int, bool)
+        allowed_types = (str, int, float, bool)
 
         # TODO: get "help" from docstring :)
         for arg, arg_types, arg_default in (