test BUGFIX wrong param
diff --git a/tests/client/test_client_messages.c b/tests/client/test_client_messages.c
index 6a0e850..9f11f4c 100644
--- a/tests/client/test_client_messages.c
+++ b/tests/client/test_client_messages.c
@@ -110,7 +110,7 @@
     /* create getconfig rpc with NC_PARAMTYPE_CONST */
     rpc = nc_rpc_getconfig(NC_DATASTORE_CANDIDATE, "filter-string", NC_WD_UNKNOWN, NC_PARAMTYPE_CONST);
     assert_non_null(rpc);
-    check_getconfig(rpc, NC_DATASTORE_CANDIDATE, "filter-string", NC_PARAMTYPE_CONST);
+    check_getconfig(rpc, NC_DATASTORE_CANDIDATE, "filter-string", NC_WD_UNKNOWN);
     nc_rpc_free(rpc);
 
     /* create getconfig rpc with NC_PARAMTYPE_FREE */