--- a/src/server/sv_main.c	2017-12-09 17:46:40.789444982 +0100
+++ b/src/server/sv_main.c	2017-12-09 17:46:36.556662958 +0100
@@ -286,6 +286,7 @@
 void SV_MasterHeartbeat(const char *msg)
 {
 	static netadr_t adr[MAX_MASTER_SERVERS][2]; // [2] for v4 and v6 address for the same address string.
+	byte     message[MAX_MSGLEN];
 	int             i;
 	int             res;
 	int             netenabled;