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-rw-r--r--sysdeps/unix/sysv/linux/net/ppp_defs.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/net/ppp_defs.h b/sysdeps/unix/sysv/linux/net/ppp_defs.h
index 21a33b20a3..dfd40e1825 100644
--- a/sysdeps/unix/sysv/linux/net/ppp_defs.h
+++ b/sysdeps/unix/sysv/linux/net/ppp_defs.h
@@ -1,3 +1,8 @@
+#ifndef _NET_PPP_DEFS_H
+#define _NET_PPP_DEFS_H 1
+
 #include <sys/types.h>
 typedef u_int32_t __u32;
 #include <linux/ppp_defs.h>
+
+#endif /* net/ppp_defs.h */