diff --git a/src/vm.cpp b/src/vm.cpp
index fcb38dec..28a59a66 100644
--- a/src/vm.cpp
+++ b/src/vm.cpp
@@ -217,7 +217,7 @@ namespace pkpy{
     }
 
     const PyTypeInfo* VM::_inst_type_info(PyObject* obj){
-        if(is_int(obj)) return &_all_types[tp_int];
+        if(is_small_int(obj)) return &_all_types[tp_int];
         return &_all_types[obj->type];
     }