diff --git a/src/theme.scss b/src/theme.scss
index 7dd30ee31..ecdf76343 100644
--- a/src/theme.scss
+++ b/src/theme.scss
@@ -119,8 +119,10 @@ input[type="checkbox"] {
     margin-right: 5px;
 }
 
-.tooltip {
+.tooltip-inner {
     white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
 }
 
 // ----------------------------