diff --git a/src/zen/common/zenThemeModifier.js b/src/zen/common/zenThemeModifier.js
index 40845b827..76ab3d656 100644
--- a/src/zen/common/zenThemeModifier.js
+++ b/src/zen/common/zenThemeModifier.js
@@ -103,7 +103,7 @@
         if (AppConstants.platform == "macosx") {
           const targetRadius = window.matchMedia("(-moz-mac-tahoe-theme)")
             .matches
-            ? 16
+            ? 14
             : 10;
           document.documentElement.style.setProperty(
             "--zen-border-radius",