diff --git a/misc.c b/misc.c
index 24f7df5..495b029 100644
--- a/misc.c
+++ b/misc.c
@@ -108,7 +108,9 @@
 	copy->pw_gecos = xstrdup(pw->pw_gecos);
 	copy->pw_uid = pw->pw_uid;
 	copy->pw_gid = pw->pw_gid;
+#ifdef HAVE_PW_CLASS_IN_PASSWD
 	copy->pw_class = xstrdup(pw->pw_class);
+#endif
 	copy->pw_dir = xstrdup(pw->pw_dir);
 	copy->pw_shell = xstrdup(pw->pw_shell);
 	return copy;