diff --git a/addons/web/static/src/css/base.css b/addons/web/static/src/css/base.css
index d53f18b59aa..97bec47d0a7 100644
--- a/addons/web/static/src/css/base.css
+++ b/addons/web/static/src/css/base.css
@@ -3317,11 +3317,6 @@ div.ui-widget-overlay {
     overflow: hidden !important;
   }
 }
-@media {
-    .openerp .oe_form .oe_form_field {
-         display: -moz-stack;
-    }
-}
 .blockUI.blockOverlay {
   background-color: black;
   opacity: 0.6;
diff --git a/addons/web/static/src/css/base.sass b/addons/web/static/src/css/base.sass
index e2c79475179..7e467281e44 100644
--- a/addons/web/static/src/css/base.sass
+++ b/addons/web/static/src/css/base.sass
@@ -2626,9 +2626,6 @@ div.ui-widget-overlay
         .openerp div.oe_mail_wall
             overflow: hidden !important
 // }}}
-@media
-    .openerp .oe_form .oe_form_field
-        display: -moz-stack
 
 .blockUI.blockOverlay
     background-color: black