diff --git a/sass/weather-icons-core.scss b/sass/weather-icons-core.scss
index 3aee00c..0abc9b2 100644
--- a/sass/weather-icons-core.scss
+++ b/sass/weather-icons-core.scss
@@ -1,8 +1,8 @@
 // Base Variables
-$wi-path:                        "../font";
-$wi-version:                     "2.0";
-$wi-css-prefix:                  wi;
-$wi-font-family:                 weathericons;
+$wi-path:                        "../font" !default;
+$wi-version:                     "2.0" !default;
+$wi-css-prefix:                  wi !default;
+$wi-font-family:                 weathericons !default;
 
 @font-face {
     font-family: '#{$wi-font-family}';
@@ -50,4 +50,4 @@ $wi-font-family:                 weathericons;
 .#{$wi-css-prefix}-rotate-270 { @include wi-icon-rotate(270deg, 3); }
 
 .#{$wi-css-prefix}-flip-horizontal { @include wi-icon-flip(-1, 1, 0); }
-.#{$wi-css-prefix}-flip-vertical   { @include wi-icon-flip(1, -1, 2); }
\ No newline at end of file
+.#{$wi-css-prefix}-flip-vertical   { @include wi-icon-flip(1, -1, 2); }