diff --git a/src/styles/_bootstrap_variables.scss b/src/styles/_bootstrap_variables.scss
index 123c903af3a..83a34623f2e 100644
--- a/src/styles/_bootstrap_variables.scss
+++ b/src/styles/_bootstrap_variables.scss
@@ -56,8 +56,6 @@ $navbar-light-color: rgba(black, .5) !default;
 $navbar-dark-toggler-icon-bg: url("data:image/svg+xml;charset=utf8,<svg+viewBox='0+0+30+30'+xmlns='http://www.w3.org/2000/svg'><path+stroke='#{$navbar-dark-color}'+stroke-width='2'+stroke-linecap='round'+stroke-miterlimit='10'+d='M4+7h22M4+15h22M4+23h22'/></svg>") !default;
 $navbar-light-toggler-icon-bg: url("data:image/svg+xml;charset=utf8,<svg+viewBox='0+0+30+30'+xmlns='http://www.w3.org/2000/svg'><path+stroke='#{$navbar-light-color}'+stroke-width='2'+stroke-linecap='round'+stroke-miterlimit='10'+d='M4+7h22M4+15h22M4+23h22'/></svg>") !default;
 
-$min-contrast-ratio: 2 !default;
-
 $link-decoration: none;
 $link-hover-decoration: underline;
 
diff --git a/src/themes/dspace/styles/_theme_sass_variable_overrides.scss b/src/themes/dspace/styles/_theme_sass_variable_overrides.scss
index 8bce1c4a61b..b3e4e477994 100644
--- a/src/themes/dspace/styles/_theme_sass_variable_overrides.scss
+++ b/src/themes/dspace/styles/_theme_sass_variable_overrides.scss
@@ -60,8 +60,6 @@ $theme-custom-semantic-colors: (
 
 /*** OTHER BOOTSTRAP VARIABLES ***/
 
-$min-contrast-ratio: 2.06 !default;
-
 $body-color: #343a40;       // As Bootstrap $gray-800
 
 $link-color: #1e6f90;       // Blue green, as DSpace $info