diff --git a/modules/overlay/overlay-child-rtl.css b/modules/overlay/overlay-child-rtl.css
index 8d90fab..7fd39f4 100644
--- a/modules/overlay/overlay-child-rtl.css
+++ b/modules/overlay/overlay-child-rtl.css
@@ -31,5 +31,5 @@ html {
   right: auto;
 }
 #overlay-tabs li {
-  margin: 0 -3px 0 O;
+  margin: 0 -3px 0 0;
 }