1 files changed, 5 insertions, 0 deletions
diff --git a/hw/pcnet.h b/hw/pcnet.h
index da8c3bd..9664311 100644
--- a/hw/pcnet.h
+++ b/hw/pcnet.h
@@ -1,3 +1,6 @@
+#ifndef HW_PCNET_H
+#define HW_PCNET_H 1
+
 #define PCNET_IOPORT_SIZE       0x20
 #define PCNET_PNPMMIO_SIZE      0x20
 
@@ -63,3 +66,5 @@ void pcnet_set_link_status(NetClientState *nc);
 void pcnet_common_cleanup(PCNetState *d);
 int pcnet_common_init(DeviceState *dev, PCNetState *s, NetClientInfo *info);
 extern const VMStateDescription vmstate_pcnet;
+
+#endif