diff --git a/sys/compat/common/Makefile b/sys/compat/common/Makefile
index f6f378184bf9..7966c05e6ba3 100644
--- a/sys/compat/common/Makefile
+++ b/sys/compat/common/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.58 2016/11/03 04:26:58 riastradh Exp $
+#	$NetBSD: Makefile,v 1.59 2016/11/03 22:23:03 pgoyette Exp $
 
 LIB=		compat
 NOPIC=		# defined
@@ -11,6 +11,11 @@ CPPFLAGS=	${COMPATCPPFLAGS} ${SKIP_AUTODEP::=}
 # Common compatibility code, used by all emulations
 SRCS=	compat_exec.c compat_util.c
 
+# Compatability code for 4.3BSD 
+SRCS+=	if_43.c
+
+# Include compatability code common to libcompat and the compat module
+
 .include "Makefile.sysio"
 .include "Makefile.sysv"
 
diff --git a/sys/compat/common/Makefile.sysio b/sys/compat/common/Makefile.sysio
index 52c344221571..9e29d816204f 100644
--- a/sys/compat/common/Makefile.sysio
+++ b/sys/compat/common/Makefile.sysio
@@ -1,10 +1,10 @@
-#	$NetBSD: Makefile.sysio,v 1.5 2016/11/03 11:32:15 pgoyette Exp $
+#	$NetBSD: Makefile.sysio,v 1.6 2016/11/03 22:23:03 pgoyette Exp $
 
 # Sources for syscall and ioctl compatibility across the versions.
 
 # Compatibility code for 4.3BSD
 SRCS+=	kern_exit_43.c kern_info_43.c kern_resource_43.c kern_sig_43.c \
-	tty_43.c uipc_syscalls_43.c vfs_syscalls_43.c vm_43.c if_43.c
+	tty_43.c uipc_syscalls_43.c vfs_syscalls_43.c vm_43.c
 
 # Compatibility code for NetBSD 0.9
 SRCS+=	kern_info_09.c