diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 6e74706..80769f1 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -661,13 +661,13 @@
 #endif
 #endif
 
-#ifdef CONFIG_FDDI
+#if defined(CONFIG_FDDI) || defined(CONFIG_FDDI_MODULE)
 	case ARPHRD_FDDI:
 		arp->ar_hrd = htons(ARPHRD_ETHER);
 		arp->ar_pro = htons(ETH_P_IP);
 		break;
 #endif
-#ifdef CONFIG_TR
+#if defined(CONFIG_TR) || defined(CONFIG_TR_MODULE)
 	case ARPHRD_IEEE802_TR:
 		arp->ar_hrd = htons(ARPHRD_IEEE802);
 		arp->ar_pro = htons(ETH_P_IP);
@@ -1051,7 +1051,7 @@
 			return -EINVAL;
 	}
 	switch (dev->type) {
-#ifdef CONFIG_FDDI
+#if defined(CONFIG_FDDI) || defined(CONFIG_FDDI_MODULE)
 	case ARPHRD_FDDI:
 		/*
 		 * According to RFC 1390, FDDI devices should accept ARP
diff --git a/net/llc/llc_sap.c b/net/llc/llc_sap.c
index a432f0e..94e7fca 100644
--- a/net/llc/llc_sap.c
+++ b/net/llc/llc_sap.c
@@ -31,7 +31,7 @@
 	case ARPHRD_ETHER:
 	case ARPHRD_LOOPBACK:
 		return sizeof(struct ethhdr);
-#ifdef CONFIG_TR
+#if defined(CONFIG_TR) || defined(CONFIG_TR_MODULE)
 	case ARPHRD_IEEE802_TR:
 		return sizeof(struct trh_hdr);
 #endif