diff --git a/src/rounded-corners.cpp b/src/rounded-corners.cpp
index e181077..d18bbf2 100644
--- a/src/rounded-corners.cpp
+++ b/src/rounded-corners.cpp
@@ -38,7 +38,7 @@ uniform mediump vec2 bottom_right;
 uniform mediump vec2 full_bottom_right;
 
 // Rounding radius
-const mediump float radius = 20.0;
+const mediump float radius = 15.0;
 
 void main()
 {