diff --git a/cmdline/portable.h b/cmdline/portable.h
index 3c61125f..7b904a4d 100644
--- a/cmdline/portable.h
+++ b/cmdline/portable.h
@@ -123,6 +123,10 @@
 #endif
 #endif
 
+#if HAVE_MACH_MACH_TIME_H
+#include <mach/mach_time.h>
+#endif
+
 #if HAVE_DIRENT_H
 #include <dirent.h>
 #define NAMLEN(dirent) strlen((dirent)->d_name)
diff --git a/cmdline/unix.c b/cmdline/unix.c
index be077775..8d086f9e 100644
--- a/cmdline/unix.c
+++ b/cmdline/unix.c
@@ -239,7 +239,7 @@ uint64_t tick(void)
 {
 #if HAVE_MACH_ABSOLUTE_TIME
 	/* for Mac OS X */
-	return match_absolute_time();
+	return mach_absolute_time();
 #elif HAVE_CLOCK_GETTIME && (defined(CLOCK_MONOTONIC) || defined(CLOCK_MONOTONIC_RAW))
 	/* for Linux */
 	struct timespec tv;
diff --git a/configure.ac b/configure.ac
index f42c4f66..8832ebc6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -25,7 +25,7 @@ AC_HEADER_TIME
 AC_CHECK_HEADERS([fcntl.h stddef.h stdint.h stdlib.h string.h limits.h])
 AC_CHECK_HEADERS([unistd.h getopt.h fnmatch.h io.h inttypes.h byteswap.h])
 AC_CHECK_HEADERS([sys/time.h sys/file.h sys/ioctl.h sys/vfs.h sys/statfs.h sys/param.h sys/mount.h])
-AC_CHECK_HEADERS([linux/fiemap.h linux/fs.h])
+AC_CHECK_HEADERS([linux/fiemap.h linux/fs.h mach/mach_time.h])
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST