diff --git a/scss/_button-group.scss b/scss/_button-group.scss
index 6c4a0ca7f9..83234f948a 100644
--- a/scss/_button-group.scss
+++ b/scss/_button-group.scss
@@ -197,7 +197,7 @@
 // See https://github.com/twbs/bootstrap/pull/12794 and
 // https://github.com/twbs/bootstrap/pull/14559 for more information.
 
-.btn-toggle-group {
+.btn-group-toggle {
   > .btn,
   > .btn-group > .btn {
     margin-bottom: 0; // Override default `<label>` value