diff --git a/scss/_custom-forms.scss b/scss/_custom-forms.scss
index 0804c63cf95c..3db6c2bde0e1 100644
--- a/scss/_custom-forms.scss
+++ b/scss/_custom-forms.scss
@@ -136,9 +136,11 @@
   .custom-control-input:disabled {
     &:checked ~ .custom-control-label::before {
       background-color: $custom-control-indicator-checked-disabled-bg;
+      @include gradient-bg($custom-control-indicator-checked-disabled-bg);
     }
     &:indeterminate ~ .custom-control-label::before {
       background-color: $custom-control-indicator-checked-disabled-bg;
+      @include gradient-bg($custom-control-indicator-checked-disabled-bg);
     }
   }
 }
@@ -162,6 +164,7 @@
   .custom-control-input:disabled {
     &:checked ~ .custom-control-label::before {
       background-color: $custom-control-indicator-checked-disabled-bg;
+      @include gradient-bg($custom-control-indicator-checked-disabled-bg);
     }
   }
 }
@@ -205,6 +208,7 @@
   .custom-control-input:disabled {
     &:checked ~ .custom-control-label::before {
       background-color: $custom-control-indicator-checked-disabled-bg;
+      @include gradient-bg($custom-control-indicator-checked-disabled-bg);
     }
   }
 }