diff --git a/addons/website/static/src/css/editor.css b/addons/website/static/src/css/editor.css
index 4fb4496e692..df2188e794d 100644
--- a/addons/website/static/src/css/editor.css
+++ b/addons/website/static/src/css/editor.css
@@ -26,6 +26,7 @@
   -webkit-box-shadow: none;
   -moz-box-shadow: none;
   box-shadow: none;
+  -ms-filter: "alpha(opacity=50)";
 }
 
 /* ---- OpenERP Style ---- {{{ */
diff --git a/addons/website/static/src/css/editor.sass b/addons/website/static/src/css/editor.sass
index 2e6513f7c1d..49b71ffefdf 100644
--- a/addons/website/static/src/css/editor.sass
+++ b/addons/website/static/src/css/editor.sass
@@ -23,6 +23,7 @@
     background: transparent
     border: none
     +box-shadow(none)
+    -ms-filter: "alpha(opacity=50)"
 
 // }}}