1 files changed, 1 insertions, 2 deletions

diff --git a/configure.in b/configure.in
index 38afa3b4d..c342d14fa 100644
--- a/configure.in
+++ b/configure.in
@@ -829,10 +829,9 @@ AC_CACHE_CHECK([for pw_class field in struct passwd],
                 ac_cv_have_pw_class_in_struct_passwd, [
         AC_TRY_COMPILE(
                 [
-#include <sys/types.h>
 #include <pwd.h>
                 ],
-                [ struct passwd p s; p.pw_class = NULL; ],
+                [ struct passwd p; p.pw_class = 0; ],
                 [ ac_cv_have_pw_class_in_struct_passwd="yes" ],
                 [ ac_cv_have_pw_class_in_struct_passwd="no" ]
         )