diff --git a/src/Web/HTML/Window.purs b/src/Web/HTML/Window.purs
index ab6bd33..1d83d56 100644
--- a/src/Web/HTML/Window.purs
+++ b/src/Web/HTML/Window.purs
@@ -111,9 +111,9 @@ foreign import scroll :: Int -> Int -> Window -> Effect Unit
 
 foreign import scrollBy :: Int -> Int -> Window -> Effect Unit
 
-foreign import scrollX :: Window -> Effect Int
+foreign import scrollX :: Window -> Effect Number
 
-foreign import scrollY :: Window -> Effect Int
+foreign import scrollY :: Window -> Effect Number
 
 foreign import localStorage :: Window -> Effect Storage