diff --git a/app/javascript/flavours/glitch/styles/components/single_column.scss b/app/javascript/flavours/glitch/styles/components/single_column.scss
index 45d57aedd..992a42d78 100644
--- a/app/javascript/flavours/glitch/styles/components/single_column.scss
+++ b/app/javascript/flavours/glitch/styles/components/single_column.scss
@@ -281,7 +281,7 @@
     }
   }
 
-  .ui__header {
+  .layout-single-column .ui__header {
     display: flex;
     background: $ui-base-color;
     border-bottom: 1px solid lighten($ui-base-color, 8%);