diff --git a/proposals/4230-animated-image-flag.md b/proposals/4230-animated-image-flag.md
index b30ef5a44..0c5f6eb18 100644
--- a/proposals/4230-animated-image-flag.md
+++ b/proposals/4230-animated-image-flag.md
@@ -31,7 +31,7 @@ Example:
       "h": 480,
       "mimetype": "image/gif",
       "size": 35295,
-      "is_animated": "true",
+      "is_animated": true,
     }
 ```