diff --git a/sys/net/if.h b/sys/net/if.h
index 95566fb9f941..216c5b4ad168 100644
--- a/sys/net/if.h
+++ b/sys/net/if.h
@@ -374,7 +374,7 @@ struct	ifconf {
 #define	ifc_req	ifc_ifcu.ifcu_req	/* array of structures returned */
 };
 
-#if defined (__amd64__) || defined (COMPAT_32BIT)
+#if defined (__amd64__)
 struct ifconf32 {
 	int	ifc_len;		/* size of associated buffer */
 	union {
diff --git a/sys/sys/sockio.h b/sys/sys/sockio.h
index 18acd3f5307d..b97509b26291 100644
--- a/sys/sys/sockio.h
+++ b/sys/sys/sockio.h
@@ -62,7 +62,7 @@
 #define	SIOCSIFBRDADDR	 _IOW('i', 19, struct ifreq)	/* set broadcast addr */
 #define	OSIOCGIFCONF	_IOWR('i', 20, struct ifconf)	/* get ifnet list */
 #define	SIOCGIFCONF	_IOWR('i', 36, struct ifconf)	/* get ifnet list */
-#if  defined (__amd64__) || defined (COMPAT_32BIT)
+#if  defined (__amd64__)
 #define	SIOCGIFCONF32	_IOWR('i', 36, struct ifconf32)	/* get ifnet list */
 #endif
 #define	OSIOCGIFNETMASK	_IOWR('i', 21, struct ifreq)	/* get net addr mask */