diff --git a/addons/portal/static/src/scss/portal.scss b/addons/portal/static/src/scss/portal.scss
index ef7360cf63c..93fdd881539 100644
--- a/addons/portal/static/src/scss/portal.scss
+++ b/addons/portal/static/src/scss/portal.scss
@@ -480,8 +480,8 @@ form label {
 
         .o_portal_chatter_message_title {
             p {
-                font-size:85%;
-                color:$o-main-color-muted;
+                font-size: 85%;
+                color: $text-muted;
                 margin: 0px;
             }
         }
@@ -562,4 +562,3 @@ form label {
         }
     }
 }
-