diff --git a/src/httpd.js.c b/src/httpd.js.c
index ab3b3de5..16401dbd 100644
--- a/src/httpd.js.c
+++ b/src/httpd.js.c
@@ -167,6 +167,7 @@ static void _httpd_message_callback(tf_http_request_t* request, int op_code, con
 	JS_SetPropertyStr(context, event, "data", JS_NewStringLen(context, data, size));
 	JSValue response = JS_Call(context, on_message, JS_UNDEFINED, 1, &event);
 	tf_util_report_error(context, response);
+	JS_FreeValue(context, response);
 	JS_FreeValue(context, event);
 	JS_FreeValue(context, on_message);
 }