diff --git a/configure.ac b/configure.ac
index 39929f9..cc2bf59 100644
--- a/configure.ac
+++ b/configure.ac
@@ -68,7 +68,7 @@ AC_SYS_LARGEFILE
 AC_FUNC_MALLOC
 AC_FUNC_REALLOC
 AC_FUNC_STRTOD
-AC_CHECK_FUNCS([memchr memmove memset strerror strtol sched_getaffinity sysconf
+AC_CHECK_FUNCS([memchr memmove memset strerror strtol sched_getaffinity sysconf \
   GetSystemInfo _setmode _get_osfhandle])
 AC_CHECK_HEADER([sys/endian.h],
                [