diff --git a/gtk/gtkswitch.c b/gtk/gtkswitch.c
index 4b5e270aa0..15f11a4649 100644
--- a/gtk/gtkswitch.c
+++ b/gtk/gtkswitch.c
@@ -211,8 +211,8 @@ gtk_switch_multipress_gesture_pressed (GtkGestureMultiPress *gesture,
   /* If the press didn't happen in the draggable handle,
    * cancel the pan gesture right away
    */
-  if ((priv->is_active && x <= allocation.width / 2) ||
-      (!priv->is_active && x > allocation.width / 2))
+  if ((priv->is_active && x <= allocation.width / 2.0) ||
+      (!priv->is_active && x > allocation.width / 2.0))
     gtk_gesture_set_state (priv->pan_gesture, GTK_EVENT_SEQUENCE_DENIED);
 }