diff --git a/reaction/code/qcommon/net_ip.c b/reaction/code/qcommon/net_ip.c
index 2708e9b2..fe5c8da6 100644
--- a/reaction/code/qcommon/net_ip.c
+++ b/reaction/code/qcommon/net_ip.c
@@ -425,7 +425,7 @@ qboolean NET_CompareBaseAdrMask(netadr_t a, netadr_t b, int netmask)
 	if(curbyte && memcmp(addra, addrb, curbyte))
 			return qfalse;
 
-	netmask &= ~0x07;
+	netmask &= 0x07;
 	if(netmask)
 	{
 		cmpmask = (1 << netmask) - 1;