diff --git a/0087-on_slider b/0087-on_slider
index 583f622..97267c3 100644
--- a/0087-on_slider
+++ b/0087-on_slider
@@ -1,5 +1,5 @@
 on_slider = function(slider, x,y)
-	if x < slider.x0 or x > slider.x1 then return end
+	if x < slider.x0-slider.w/2 or x > slider.x1+slider.w/2 then return end
 	if y < slider.y0-slider.h/2 or y > slider.y0+slider.h/2 then return end
 	return true
 end
\ No newline at end of file