diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index 67f7c9de0b16..2ed9dd2b5f2f 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -143,7 +143,11 @@ static char dhcp_client_identifier[253] __initdata;
 
 /* Persistent data: */
 
+#ifdef IPCONFIG_DYNAMIC
 static int ic_proto_used;			/* Protocol used, if any */
+#else
+#define ic_proto_used 0
+#endif
 static __be32 ic_nameservers[CONF_NAMESERVERS_MAX]; /* DNS Server IP addresses */
 static u8 ic_domain[64];		/* DNS (not NIS) domain name */