diff --git a/addons/web/static/src/css/base.css b/addons/web/static/src/css/base.css
index c4e478cf7c6..15096398b41 100644
--- a/addons/web/static/src/css/base.css
+++ b/addons/web/static/src/css/base.css
@@ -1763,7 +1763,7 @@ ul.oe-arrow-list li.oe-arrow-list-selected .oe-arrow-list-after {
     -moz-box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1), 0 1px 1px rgba(255, 255, 255, 0.8) inset;
     -webkit-box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1), 0 1px 1px rgba(255, 255, 255, 0.8) inset;
     -o-box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1), 0 1px 1px rgba(255, 255, 255, 0.8) inset;
-    -box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1), 0 1px 1px rgba(255, 255, 255, 0.8) inset;
+    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1), 0 1px 1px rgba(255, 255, 255, 0.8) inset;
     text-shadow: 0 1px 1px rgba(255, 255, 255, 0.5);
     -webkit-font-smoothing: antialiased;
     outline: none;