diff --git a/kdc/windc_plugin.h b/kdc/windc_plugin.h
index fa4ba434f..4401500e6 100644
--- a/kdc/windc_plugin.h
+++ b/kdc/windc_plugin.h
@@ -68,9 +68,9 @@ typedef krb5_error_code
 (*krb5plugin_windc_client_access)(
 	void *, krb5_context,
 	krb5_kdc_configuration *config,
-	hdb_entry_ex *, const char *,
-	hdb_entry_ex *, const char *,
-	KDC_REQ *, krb5_data *);
+	hdb_entry_ex *, const char *, 
+	hdb_entry_ex *, const char *, 
+	KDC_REQ *, METHOD_DATA *);
 
 
 #define KRB5_WINDC_PLUGIN_MINOR			6