diff --git a/scss/mixins/_buttons.scss b/scss/mixins/_buttons.scss
index 968634880e..861d353e27 100644
--- a/scss/mixins/_buttons.scss
+++ b/scss/mixins/_buttons.scss
@@ -92,7 +92,7 @@
 }
 
 // Button sizes
-@mixin button-size($padding-y, $padding-x, $font-size, $line-height, $border-radius) {
+@mixin button-size($padding-y, $padding-x, $font-size, $border-radius) {
   padding: $padding-y $padding-x;
   font-size: $font-size;
   @include border-radius($border-radius);