diff --git a/scss/_variables.scss b/scss/_variables.scss
index 76394c2259..6b9ae3d3f7 100644
--- a/scss/_variables.scss
+++ b/scss/_variables.scss
@@ -658,7 +658,7 @@ $input-height-lg:                       add($input-line-height * 1em, add($input
 $input-transition:                      border-color .15s ease-in-out, box-shadow .15s ease-in-out !default;
 
 
-$form-check-input-width:                  1.25em !default;
+$form-check-input-width:                  1em !default;
 $form-check-min-height:                   $font-size-base * $line-height-base !default;
 $form-check-padding-left:                 $form-check-input-width + .5em !default;
 $form-check-margin-bottom:                .125rem !default;