diff --git a/scss/_variables.scss b/scss/_variables.scss
index 0288898d3c..07f3db235b 100644
--- a/scss/_variables.scss
+++ b/scss/_variables.scss
@@ -1543,9 +1543,6 @@ $alert-margin-bottom:           1rem !default;
 $alert-border-radius:           var(--#{$prefix}border-radius) !default;
 $alert-link-font-weight:        $font-weight-bold !default;
 $alert-border-width:            var(--#{$prefix}border-width) !default;
-$alert-bg-scale:                -80% !default;
-$alert-border-scale:            -70% !default;
-$alert-color-scale:             40% !default;
 $alert-dismissible-padding-r:   $alert-padding-x * 3 !default; // 3x covers width of x plus default padding on either side
 // scss-docs-end alert-variables