diff --git a/_sass/support/_functions.scss b/_sass/support/_functions.scss
index 290709a..1c2de2e 100644
--- a/_sass/support/_functions.scss
+++ b/_sass/support/_functions.scss
@@ -1,5 +1,5 @@
 @function rem($size, $unit: "") {
-  $rem-size: $size / $root-font-size;
+  $rem-size: math.div($size, $root-font-size);
 
   @if $unit == false {
     @return #{$rem-size};