diff --git a/basis/ui/gadgets/buttons/buttons.factor b/basis/ui/gadgets/buttons/buttons.factor
index c975e64b12..d74284cbd6 100644
--- a/basis/ui/gadgets/buttons/buttons.factor
+++ b/basis/ui/gadgets/buttons/buttons.factor
@@ -6,7 +6,6 @@ classes.tuple opengl opengl.gl math.vectors ui.commands ui.gadgets
 ui.gadgets.borders ui.gadgets.labels ui.gadgets.theme
 ui.gadgets.tracks ui.gadgets.packs ui.gadgets.worlds ui.gestures
 ui.render math.geometry.rect locals alien.c-types ;
-
 IN: ui.gadgets.buttons
 
 TUPLE: button < border pressed? selected? quot ;
@@ -111,10 +110,10 @@ TUPLE: checkmark-paint < caching-pen color last-vertices ;
 
 : checkmark-points ( dim -- points )
     {
-        [ { 0 0 } v* ]
-        [ { 1 1 } v* ]
-        [ { 0 1 } v* ]
-        [ { 1 0 } v* ]
+        [ { 0 0 } v* { 0.5 0.5 } v+ ]
+        [ { 1 1 } v* { 0.5 0.5 } v+ ]
+        [ { 1 0 } v* { -0.3 0.5 } v+ ]
+        [ { 0 1 } v* { -0.3 0.5 } v+ ]
     } cleave 4array ;
 
 : checkmark-vertices ( dim -- vertices )