diff --git a/debian/wit-network-config.postinst b/debian/wit-network-config.postinst
index 943214c..677b21a 100755
--- a/debian/wit-network-config.postinst
+++ b/debian/wit-network-config.postinst
@@ -221,8 +221,8 @@ case "$1" in
 	        ipv4=$(dig_txt ipv4.$if.${HOSTNAME})
 
                 cat <<-EOF >>$IFCONFIG
-			auto ${if}
-			iface ${if} inet static
+			auto ${ifname}
+			iface ${ifname} inet static
 			    address ${ipv4/\\/}