diff --git a/source/arm11/acl.c b/source/arm11/acl.c
index 87c5bf7..fb2aaf8 100644
--- a/source/arm11/acl.c
+++ b/source/arm11/acl.c
@@ -259,7 +259,7 @@ acl_error_t acl_select_game( acl_text_t game, acl_boolean_t filter, acl_count_t
 acl_error_t acl_query_cheat_set( acl_index_t index, acl_chtid_t *chtid, acl_region_t *region )
 {
     CheatLib *inst = &gblcht;
-    if( chtid == NULL || region == NULL ) return ACHTLIB_SUCCESS;
+    if( chtid == NULL && region == NULL ) return ACHTLIB_SUCCESS;
     if( inst->serc == 0 ) return ACHTLIB_NOT_OPEN;
     if( inst->listc == 0 ) return ACHTLIB_INVALID;