1 files changed, 3 insertions, 3 deletions

diff --git a/src/_props.scss b/src/_props.scss
index 0bca5a3..66a1d85 100644
--- a/src/_props.scss
+++ b/src/_props.scss
@@ -87,13 +87,13 @@
     }
 }
 
-@mixin materialize($ref, $match-meta: null) {
+@mixin materialize($ref, $match-meta: nil) {
     @if is-prop-ref($ref) {
         $name:  list.nth($ref, 2);
         $value: get(list.nth($ref, 3));
         $meta:  get(list.nth($ref, 4));
 
-        @if $meta == $match-meta {
+        @if $match-meta != nil and $meta == $match-meta {
             @include materialize-helper($name, $value);
         }
     } @else if meta.type-of($ref) == 'list' {
@@ -103,7 +103,7 @@
                 $value: get(list.nth($r, 3));
                 $meta:  get(list.nth($r, 4));
         
-                @if $meta == $match-meta {
+                @if $match-meta != nil and $meta == $match-meta {
                     @include materialize-helper($name, $value);
                 }
             }