--- a/gfx/layers/apz/test/gtest/TestSnapping.cpp
+++ b/gfx/layers/apz/test/gtest/TestSnapping.cpp
@@ -89,12 +89,12 @@ TEST_F(APZCSnappingTester, Snap_After_Pi
   UniquePtr<ScopedLayerTreeRegistration> registration = MakeUnique<ScopedLayerTreeRegistration>(manager, 0, root, mcc);
   manager->UpdateHitTestingTree(0, root, false, 0, 0);
 
   RefPtr<TestAsyncPanZoomController> apzc = ApzcOf(root);
 
   // Allow zooming
   apzc->UpdateZoomConstraints(ZoomConstraints(true, true, CSSToParentLayerScale(0.25f), CSSToParentLayerScale(4.0f)));
 
-  PinchWithPinchInput(apzc, ScreenIntPoint(50, 50), ScreenIntPoint(50, 50), 1.2);
+  PinchWithPinchInput(apzc, ScreenIntPoint(50, 50), ScreenIntPoint(50, 50), 1.2f);
 
   apzc->AssertStateIsSmoothScroll();
-}
\ No newline at end of file
+}