diff --git a/configure.ac b/configure.ac
index cf8904fdd..ce1df3297 100644
--- a/configure.ac
+++ b/configure.ac
@@ -756,6 +756,7 @@ RB_CHK_SYSHEADER(unistd.h, [UNISTD_H])
 RB_CHK_SYSHEADER(signal.h, [SIGNAL_H])
 RB_CHK_SYSHEADER(ifaddrs.h, [IFADDRS_H])
 RB_CHK_SYSHEADER(fcntl.h, [FCNTL_H])
+RB_CHK_SYSHEADER(link.h, [LINK_H])
 RB_CHK_SYSHEADER(sys/types.h, [SYS_TYPES_H])
 RB_CHK_SYSHEADER(sys/time.h, [SYS_TIME_H])
 RB_CHK_SYSHEADER(sys/stat.h, [SYS_STAT_H])