diff --git a/pam_client.c b/pam_client.c
index e6f68a1..f6efc63 100644
--- a/pam_client.c
+++ b/pam_client.c
@@ -43,7 +43,9 @@ PAM_EXTERN int pam_sm_authenticate(pam_handle_t * pamh, int flags
  char *default_client="/etc/runlevels/default/client";
  char *started_client="/run/openrc/started/client";
  char *started_local="/run/openrc/started/local";
+ char *ldap_conf="/etc/ldap.conf";
 
+ // wait for client daemon
  if (file_exists(boot_client) || file_exists(default_client)) {
 	 for(i=0;i<WAITTIME;i++) {
 	     if(file_exists(started_client) || 
@@ -53,6 +55,10 @@ PAM_EXTERN int pam_sm_authenticate(pam_handle_t * pamh, int flags
 	     sleep(1);
 	 }
  }
+ // break auth if not exists ldap.conf
+ if (!file_exists(ldap_conf)) {
+    return PAM_AUTHINFO_UNAVAIL;
+ }
  return PAM_SUCCESS;
 }
 
diff --git a/pam_client.o b/pam_client.o
deleted file mode 100644
index 9f5c27b..0000000
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diff --git a/pam_client.so b/pam_client.so
deleted file mode 100755
index b8ab4ff..0000000
Binary files a/pam_client.so and /dev/null differ