include headers with prototypes to make sure prototypes match
diff --git a/networking/udhcp/serverpacket.c b/networking/udhcp/serverpacket.c
index 0968244..32d3c80 100644
--- a/networking/udhcp/serverpacket.c
+++ b/networking/udhcp/serverpacket.c
@@ -25,6 +25,7 @@
 #include <string.h>
 #include <time.h>
 
+#include "serverpacket.h"
 #include "dhcpd.h"
 #include "options.h"
 #include "common.h"