diff --git a/include/osmocom/mgcp/debug.h b/include/osmocom/mgcp/debug.h
index ddeb0dc..1eed769 100644
--- a/include/osmocom/mgcp/debug.h
+++ b/include/osmocom/mgcp/debug.h
@@ -29,6 +29,7 @@
 /* Debug Areas of the code */
 enum {
 	DRTP,
+	DIUUP,
 	Debug_LastEntry,
 };