diff --git a/scss/_input-group.scss b/scss/_input-group.scss
index df950fb5cb34..de2a35b6f117 100644
--- a/scss/_input-group.scss
+++ b/scss/_input-group.scss
@@ -26,7 +26,9 @@
       z-index: 3;
     }
 
-    + .form-control {
+    + .form-control,
+    + .custom-select,
+    + .custom-file {
       margin-left: -$input-border-width;
     }
   }