diff --git a/src/d_clisrv.c b/src/d_clisrv.c
index b9e01856b..9d39bb81d 100644
--- a/src/d_clisrv.c
+++ b/src/d_clisrv.c
@@ -1110,7 +1110,7 @@ static void SV_SendServerInfo(INT32 node, tic_t servertime)
 
 	M_Memcpy(netbuffer->u.serverinfo.mapmd5, mapmd5, 16);
 
-	if (!(mapheaderinfo[gamemap-1]->levelflags & LF_NOZONE) && !(mapheaderinfo[prevmap]->zonttl[0]))
+	if (!(mapheaderinfo[gamemap-1]->levelflags & LF_NOZONE) && !(mapheaderinfo[gamemap-1]->zonttl[0]))
 		netbuffer->u.serverinfo.iszone = 1;
 	else
 		netbuffer->u.serverinfo.iszone = 0;