diff --git a/aukpy/queries.py b/aukpy/queries.py
index 7d55ab8..7422e7b 100644
--- a/aukpy/queries.py
+++ b/aukpy/queries.py
@@ -13,14 +13,13 @@
     Tuple,
     Any,
     Literal,
-    TypeGuard,
 )
 
 
 Distance = Literal["km", "miles"]
 
 
-def check_simple_type(value) -> TypeGuard[Union[str, int, float, bool]]:
+def check_simple_type(value) -> bool:
     return (
         isinstance(value, str)
         or isinstance(value, float)