diff --git a/configure.ac b/configure.ac
index ecb6d09e..7b19363d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -221,7 +221,6 @@ AC_CHECK_HEADERS([getopt_long.h])
 AC_CHECK_HEADERS([arpa/inet.h fcntl.h limits.h mach/mach.h memory.h netdb.h netinet/in.h stdint.h stdlib.h string.h sys/ioctl.h sys/socket.h sys/time.h syslog.h unistd.h])
 
 # Checks for typedefs, structures, and compiler characteristics.
-AC_CHECK_HEADER_STDBOOL
 AC_C_INLINE
 AC_TYPE_INT16_T
 AC_TYPE_INT32_T