diff --git a/src/assets/scss/lbd/_navbars.scss b/src/assets/scss/lbd/_navbars.scss
index f4a2f4f0..cc699d27 100755
--- a/src/assets/scss/lbd/_navbars.scss
+++ b/src/assets/scss/lbd/_navbars.scss
@@ -157,7 +157,7 @@
     }
 
     &.fixed{
-        width: calc(100% - $sidebar-width);
+        width: calc(100% - #{$sidebar-width});
         right: 0;
         left: auto;
         border-radius: 0;