diff --git a/src/gtk-3.0/scss/apps/_thunar.scss b/src/gtk-3.0/scss/apps/_thunar.scss
index bf919424..e2581c50 100644
--- a/src/gtk-3.0/scss/apps/_thunar.scss
+++ b/src/gtk-3.0/scss/apps/_thunar.scss
@@ -11,7 +11,7 @@
   }
 
   scrolledwindow.shortcuts-pane {
-    border-top-width: 1;
+    border-top-width: 1px;
   }
  }
 }
diff --git a/src/gtk-3.20/scss/apps/_thunar.scss b/src/gtk-3.20/scss/apps/_thunar.scss
index bf919424..e2581c50 100644
--- a/src/gtk-3.20/scss/apps/_thunar.scss
+++ b/src/gtk-3.20/scss/apps/_thunar.scss
@@ -11,7 +11,7 @@
   }
 
   scrolledwindow.shortcuts-pane {
-    border-top-width: 1;
+    border-top-width: 1px;
   }
  }
 }