diff --git a/addons/web/static/src/css/base.css b/addons/web/static/src/css/base.css
index aed49dafc65..3aa95ac57de 100644
--- a/addons/web/static/src/css/base.css
+++ b/addons/web/static/src/css/base.css
@@ -2793,6 +2793,9 @@
   filter: alpha(opacity=50);
   opacity: 0.5;
 }
+.openerp .oe_list_content > tbody > tr > td.oe_list_field_boolean input:-moz-read-only {
+  opacity: 1;
+}
 .openerp .oe_list_content > tbody > tr:nth-child(odd) {
   background-color: #f0f0fa;
   background-color: #efeff8;