1 files changed, 4 insertions, 0 deletions
diff --git a/slirp/bootp.h b/slirp/bootp.h
index 30c30ab863..ec3b68704c 100644
--- a/slirp/bootp.h
+++ b/slirp/bootp.h
@@ -1,4 +1,6 @@
 /* bootp/dhcp defines */
+#ifndef SLIRP_BOOTP_H
+#define SLIRP_BOOTP_H 1
 
 #define BOOTP_SERVER	67
 #define BOOTP_CLIENT	68
@@ -120,3 +122,5 @@ typedef struct {
 #define NB_BOOTP_CLIENTS 16
 
 void bootp_input(struct mbuf *m);
+
+#endif