diff --git a/scss/_custom-forms.scss b/scss/_custom-forms.scss
index 1bf268b835b78186ab70bd0620940b470a3a36f1..381bae3216fced87c9aa53fff245489c51d7ab11 100644
--- a/scss/_custom-forms.scss
+++ b/scss/_custom-forms.scss
@@ -165,6 +165,11 @@
     }
   }
 
+  &[multiple] {
+    height: auto;
+    background-image: none;
+  }
+
   &:disabled {
     color: $custom-select-disabled-color;
     background-color: $custom-select-disabled-bg;