diff --git a/configure.ac b/configure.ac
index 470db220..b9487c3b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -49,7 +49,7 @@ AC_CHECK_FUNCS(arc4random_buf futimes \
 	getentropy getrandom getspnam getusershell \
 	getutent initgroups lckpwdf lutimes \
 	setgroups updwtmp updwtmpx innetgr \
-	getgrnam_r getgrgid_r getspnam_r \
+	getgrgid_r getspnam_r \
 	memset_s explicit_bzero)
 AC_SYS_LARGEFILE
 
diff --git a/libmisc/xgetgrnam.c b/libmisc/xgetgrnam.c
index 66d6f933..877ec03a 100644
--- a/libmisc/xgetgrnam.c
+++ b/libmisc/xgetgrnam.c
@@ -35,7 +35,7 @@
 #define ARG_TYPE	const char *
 #define ARG_NAME	name
 #define DUP_FUNCTION	__gr_dup
-#define HAVE_FUNCTION_R (defined HAVE_GETGRNAM_R)
+#define HAVE_FUNCTION_R 1
 
 #include "xgetXXbyYY.c"