diff --git a/src/c3nav/site/static/site/css/c3nav.scss b/src/c3nav/site/static/site/css/c3nav.scss
index 57008dc7..58f451b5 100644
--- a/src/c3nav/site/static/site/css/c3nav.scss
+++ b/src/c3nav/site/static/site/css/c3nav.scss
@@ -1233,7 +1233,7 @@ main.control h4 {
 main.control form tr > * {
     white-space: nowrap;
 }
-main.control select {
+main.control select[multiple] {
     display: block;
     width: 300px;
     height: 100px;