diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 6a325e8..7a82393 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -326,7 +326,7 @@
     if (type != &PyType_Type)
         mod = PyDict_GetItemString(type->tp_dict, "__abstractmethods__");
     if (!mod) {
-        PyErr_Format(PyExc_AttributeError, "__abstractmethods__");
+        PyErr_SetString(PyExc_AttributeError, "__abstractmethods__");
         return NULL;
     }
     Py_XINCREF(mod);
@@ -347,7 +347,7 @@
     else {
         res = PyDict_DelItemString(type->tp_dict, "__abstractmethods__");
         if (res && PyErr_ExceptionMatches(PyExc_KeyError)) {
-            PyErr_Format(PyExc_AttributeError, "__abstractmethods__", value);
+            PyErr_SetString(PyExc_AttributeError, "__abstractmethods__");
             return -1;
         }
     }