diff --git a/configure.in b/configure.in
index dcfffd36..30391436 100644
--- a/configure.in
+++ b/configure.in
@@ -41,7 +41,7 @@ AC_CHECK_HEADER([shadow.h],,[AC_MSG_ERROR([You need a libc with shadow.h])])
 AC_CHECK_FUNCS(l64a fchmod fchown fsync futimes getgroups gethostname getspnam \
 	gettimeofday getusershell getutent initgroups lchown lckpwdf lstat \
 	lutimes memcpy memset setgroups sigaction strchr updwtmp updwtmpx innetgr \
-	getpwnam_r getpwuid_r getgrnam_r getgrgid_r getspnam_r getaddrinfo
+	getpwnam_r getpwuid_r getgrnam_r getgrgid_r getspnam_r getaddrinfo \
 	ruserok)
 AC_SYS_LARGEFILE