diff --git a/ui/allg5ui/font.go b/ui/allg5ui/font.go
index e767b27..1a4b8cf 100644
--- a/ui/allg5ui/font.go
+++ b/ui/allg5ui/font.go
@@ -34,7 +34,7 @@ func (f *font) Height() float32 {
 }
 
 func (f *font) WidthOf(t string) float32 {
-	return f.Measure(t).Dx()
+	return f.f.TextWidth(t)
 }
 
 func (f *font) Measure(t string) geom.RectangleF32 {