diff --git a/internal/ui/context.go b/internal/ui/context.go
index 9a6e8c24c..616b02720 100644
--- a/internal/ui/context.go
+++ b/internal/ui/context.go
@@ -57,8 +57,8 @@ func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
 
 	// rate indicates how much the 4 colors are mixed. rate is in between [0, 1].
 	//
-	//     0 <= p < 1/Scale: The rate is in between [0, 1)   
-	//     1/Scale <= p:     Don't care. Adjacent colors (e.g. c0 vs c1 in an X direction) should be the same.
+	//     0 <= p <= 1/Scale: The rate is in between [0, 1]
+	//     1/Scale < p:       Don't care. Adjacent colors (e.g. c0 vs c1 in an X direction) should be the same.
 	rate := clamp(p*Scale, 0, 1)
 
 	return mix(mix(c0, c1, rate.x), mix(c2, c3, rate.x), rate.y)