--- a/browser/themes/osx/browser.css
+++ b/browser/themes/osx/browser.css
@@ -81,17 +81,17 @@
 #titlebar-buttonbox-container {
   -moz-box-align: center;
 }
 
 /* These would be margin-inline-start/end if it wasn't for the fact that OS X
  * doesn't reverse the order of the items in the titlebar in RTL mode. */
 .titlebar-placeholder[type="caption-buttons"],
 #titlebar-buttonbox {
-  margin-left: 7px;
+  margin-left: 12px;
 }
 
 /* The fullscreen button doesnt show on Yosemite(10.10) or above so dont give it a
    border there */
 @media not all and (-moz-mac-yosemite-theme) {
   .titlebar-placeholder[type="fullscreen-button"] {
     margin-right: 4px;
   }