diff --git a/usr.sbin/ppp/chap.c b/usr.sbin/ppp/chap.c
index 36be4c50ffd..103a2694320 100644
--- a/usr.sbin/ppp/chap.c
+++ b/usr.sbin/ppp/chap.c
@@ -76,6 +76,7 @@
 #ifdef HAVE_DES
 #include "chap_ms.h"
 #endif
+#include "id.h"
 
 static const char * const chapcodes[] = {
   "???", "CHALLENGE", "RESPONSE", "SUCCESS", "FAILURE"
diff --git a/usr.sbin/ppp/chat.c b/usr.sbin/ppp/chat.c
index 44849365b50..984fb620be9 100644
--- a/usr.sbin/ppp/chat.c
+++ b/usr.sbin/ppp/chat.c
@@ -72,6 +72,7 @@
 #include "radius.h"
 #endif
 #include "bundle.h"
+#include "id.h"
 
 #define BUFLEFT(c) (sizeof (c)->buf - ((c)->bufend - (c)->buf))
 
diff --git a/usr.sbin/ppp/exec.c b/usr.sbin/ppp/exec.c
index 01027042c62..5336dd334cd 100644
--- a/usr.sbin/ppp/exec.c
+++ b/usr.sbin/ppp/exec.c
@@ -62,6 +62,7 @@
 #include "chap.h"
 #include "cbcp.h"
 #include "datalink.h"
+#include "id.h"
 #include "exec.h"
 
 static struct device execdevice = {