diff --git a/configure.ac b/configure.ac
index dbcc024572..cad6b4b6f4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -780,7 +780,10 @@ fi
 AC_ARG_WITH(resolvconf, AS_HELP_STRING([--with-resolvconf=yes|no|path], [Enable resolvconf support]))
 AC_ARG_WITH(netconfig, AS_HELP_STRING([--with-netconfig=yes|no], [Enable SUSE netconfig support]))
 AC_ARG_WITH(config-dns-rc-manager-default, AS_HELP_STRING([--with-config-dns-rc-manager-default=symlink|file|netconfig|resolvconf], [Configure default value for main.rc-manager setting]), [config_dns_rc_manager_default=$withval])
-if test "$config_dns_rc_manager_default" != symlink -a "$config_dns_rc_manager_default" != file -a "$config_dns_rc_manager_default" != netconfig -a "$config_dns_rc_manager_default" != resolvconf; then
+if test "$config_dns_rc_manager_default" != symlink -a \
+        "$config_dns_rc_manager_default" != file -a \
+        "$config_dns_rc_manager_default" != netconfig -a \
+        "$config_dns_rc_manager_default" != resolvconf; then
 	AC_MSG_WARN([Unknown --with-config-dns-rc-manager-default=$config_dns_rc_manager_default setting.])
 	config_dns_rc_manager_default=
 fi