diff --git a/koha-tmpl/opac-tmpl/ccsr/en/css/right-to-left.css b/koha-tmpl/opac-tmpl/ccsr/en/css/right-to-left.css
index 7268c8ebc1..784460763a 100644
--- a/koha-tmpl/opac-tmpl/ccsr/en/css/right-to-left.css
+++ b/koha-tmpl/opac-tmpl/ccsr/en/css/right-to-left.css
@@ -142,7 +142,6 @@ body#results div#userresults {
 }
 
 form#searchform .input-wrapper {
-    -moz-box-sizing: border-box;
     right: -39px;
     left: auto;
 }