diff --git a/app/assets/stylesheets/mobile/topic-post.scss b/app/assets/stylesheets/mobile/topic-post.scss
index 620325161a..6facf0679b 100644
--- a/app/assets/stylesheets/mobile/topic-post.scss
+++ b/app/assets/stylesheets/mobile/topic-post.scss
@@ -449,7 +449,7 @@ span.highlighted {
     }
     .user-title {
       order: 4;
-      flex-basis: 100%;
+      margin-right: auto;
     }
     span {
       margin-right: 4px;