diff --git a/phpstan.neon b/phpstan.neon
index bd6f2da..208d861 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -13,6 +13,7 @@ parameters:
         return_type: 99
         param_type: 98
         property_type: 55
+        constant_type: 0
 
     bootstrapFiles:
         - tests/bootstrap.php