diff --git a/sass/_variables.scss b/sass/_variables.scss
index 2697ce2..9e0ca47 100644
--- a/sass/_variables.scss
+++ b/sass/_variables.scss
@@ -1,8 +1,8 @@
 /**
  * Global */
 
-$ms-font-path: '../fonts';
-$ms-version: '1.3.1';
-$ms-font-size-base: 14px;
-$ms-prefix: ms;
-$ms-serif-font: 'MPlantin, Garamond, Palatino, 'Times New Roman', Times, serif';
+$ms-font-path: '../fonts' !default;
+$ms-version: '1.3.1' !default;
+$ms-font-size-base: 14px !default;
+$ms-prefix: ms !default;
+$ms-serif-font: 'MPlantin, Garamond, Palatino, 'Times New Roman', Times, serif' !default;