diff --git a/src/themes/packages/default/collections/grid.variables b/src/themes/packages/default/collections/grid.variables
index a0b6ea620..93bb07090 100755
--- a/src/themes/packages/default/collections/grid.variables
+++ b/src/themes/packages/default/collections/grid.variables
@@ -32,7 +32,7 @@
 
 /* Column Gutters */
 @mobileWidth: auto;
-@mobileGutter: 1em;
+@mobileGutter: 1rem;
 
 @tabletWidth: auto;
 @tabletGutter: 8%;