diff --git a/src/css/less/grafana.less b/src/css/less/grafana.less
index 8d52f749ff5..b291b548219 100644
--- a/src/css/less/grafana.less
+++ b/src/css/less/grafana.less
@@ -435,6 +435,9 @@ select.grafana-target-segment-input {
   background-color: rgb(58, 57, 57);
   border-radius: 5px;
   z-index: 9999;
+  max-width: 800px;
+  max-height: 600px;
+  overflow: hidden;
 }
 
 .tooltip.in {