diff --git a/configure.ac b/configure.ac
index 695fa451f..b3a7366a4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -575,9 +575,9 @@ AC_CHECK_FUNC([syslog], [
 ])
 AM_CONDITIONAL(USE_SYSLOG, [test "x$syslog" = xtrue])
 
-AC_CHECK_HEADERS(sys/sockio.h glob.h net/if_tun.h linux/fib_rules.h)
+AC_CHECK_HEADERS(sys/sockio.h glob.h net/if_tun.h)
 AC_CHECK_HEADERS(net/pfkeyv2.h netipsec/ipsec.h netinet6/ipsec.h linux/udp.h)
-AC_CHECK_HEADERS(netinet/ip6.h, [], [],
+AC_CHECK_HEADERS([netinet/ip6.h linux/fib_rules.h], [], [],
 [
 	#include <sys/types.h>
 	#include <netinet/in.h>