diff --git a/docs/knowledge-base/shorten-chart-labels.md b/docs/knowledge-base/shorten-chart-labels.md
index 2a0a2a77412..d955788ea44 100644
--- a/docs/knowledge-base/shorten-chart-labels.md
+++ b/docs/knowledge-base/shorten-chart-labels.md
@@ -73,6 +73,8 @@ The following example demonstrates how to shorten long Chart labels and turn the
           value = value.substring(0, 10);
           return value + "...";
         }
+
+        return value;
       }
     </script>
 ```