diff --git a/src/include/netif/ppp/ccp.h b/src/include/netif/ppp/ccp.h
index a7271dbf..d6e21bf8 100644
--- a/src/include/netif/ppp/ccp.h
+++ b/src/include/netif/ppp/ccp.h
@@ -33,6 +33,9 @@
 #include "lwip/opt.h"
 #if PPP_SUPPORT && CCP_SUPPORT  /* don't build if not configured for use in lwipopts.h */
 
+#ifndef CCP_H
+#define CCP_H
+
 typedef struct ccp_options {
     unsigned int bsd_compress     :1; /* do BSD Compress? */
     unsigned int deflate          :1; /* do Deflate? */
@@ -50,4 +53,5 @@ typedef struct ccp_options {
 
 extern const struct protent ccp_protent;
 
+#endif /* CCP_H */
 #endif /* PPP_SUPPORT && CCP_SUPPORT */
diff --git a/src/include/netif/ppp/ppp.h b/src/include/netif/ppp/ppp.h
index 05cfed97..5027b20e 100644
--- a/src/include/netif/ppp/ppp.h
+++ b/src/include/netif/ppp/ppp.h
@@ -153,6 +153,9 @@ typedef unsigned char  u_char;
 
 #include "fsm.h"
 #include "lcp.h"
+#if CCP_SUPPORT
+#include "ccp.h"
+#endif /* CCP_SUPPORT */
 #if PPP_IPV4_SUPPORT
 #include "ipcp.h"
 #endif /* PPP_IPV4_SUPPORT */