diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index 1020d54..40d41a2 100644
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c
@@ -348,12 +348,9 @@
 
 struct auth_domain *auth_unix_lookup(struct in_addr addr)
 {
-	struct ip_map key, *ipm;
+	struct ip_map *ipm;
 	struct auth_domain *rv;
 
-	strcpy(key.m_class, "nfsd");
-	key.m_addr = addr;
-
 	ipm = ip_map_lookup("nfsd", addr);
 
 	if (!ipm)