diff --git a/netutils/pppd/ppp.h b/netutils/pppd/ppp.h
index b90844680..f436a1206 100644
--- a/netutils/pppd/ppp.h
+++ b/netutils/pppd/ppp.h
@@ -51,6 +51,7 @@
 
 #include "netutils/chat.h"
 
+#include "debug.h"
 #include "ppp_conf.h"
 #include "ahdlc.h"
 #include "lcp.h"