diff --git a/msg/tools/gencpp b/msg/tools/gencpp
index 7e446a9976..ff6c9f3e8e 160000
--- a/msg/tools/gencpp
+++ b/msg/tools/gencpp
@@ -1 +1 @@
-Subproject commit 7e446a9976916a7b6fc7266098c67fc6f73a76e0
+Subproject commit ff6c9f3e8ee0a63be994e0b7dfc7a36cb0c1d8c7