diff --git a/Python/Python-ast.c b/Python/Python-ast.c
index b8c1925..7da08e5 100644
--- a/Python/Python-ast.c
+++ b/Python/Python-ast.c
@@ -2505,7 +2505,7 @@
                         value = PyList_New(n);
                         if (!value) goto failed;
                         for(i = 0; i < n; i++)
-                                PyList_SET_ITEM(value, i, ast2obj_cmpop((cmpop_ty)asdl_seq_GET(o->v.Compare.ops, i)));
+                                PyList_SET_ITEM(value, i, ast2obj_cmpop((cmpop_ty)(int)asdl_seq_GET(o->v.Compare.ops, i)));
                 }
                 if (!value) goto failed;
                 if (PyObject_SetAttrString(result, "ops", value) == -1)