diff --git a/site/examples/images.tsx b/site/examples/images.tsx
index 6bdb959cc..b4bfa0696 100644
--- a/site/examples/images.tsx
+++ b/site/examples/images.tsx
@@ -141,7 +141,7 @@ const InsertImageButton = () => {
           alert('URL is not an image')
           return
         }
-        insertImage(editor, url)
+        url && insertImage(editor, url)
       }}
     >
       <Icon>image</Icon>