diff --git a/addons/mail/static/src/scss/discuss.scss b/addons/mail/static/src/scss/discuss.scss
index 245b715ed21..bd702e1cec9 100644
--- a/addons/mail/static/src/scss/discuss.scss
+++ b/addons/mail/static/src/scss/discuss.scss
@@ -217,7 +217,7 @@
     font-size: 1em;
     position: relative;
     &.o_user_online {
-        color: $o-brand-primary;
+        color: $o-enterprise-primary-color;
     }
     &.o_user_idle {
         color: theme-color('warning');