diff --git a/frontend/static/css/flugbuech.css b/frontend/static/css/flugbuech.css
index cd4c9e48..bb2e5416 100644
--- a/frontend/static/css/flugbuech.css
+++ b/frontend/static/css/flugbuech.css
@@ -47,4 +47,10 @@ footer {
 
 div.control + label.checkbox {
   margin-top: 8px;
+}
+
+/* Bugfix for Bulma(?) bug: Addon of a field (e.g. "km" suffic for track length entry in flight
+   form) doesn't have full height. */
+.field.has-addons .control a.button {
+  height: 100%;
 }
\ No newline at end of file