diff --git a/Objects/funcobject.c b/Objects/funcobject.c
index 426b8f4..178bd77 100644
--- a/Objects/funcobject.c
+++ b/Objects/funcobject.c
@@ -486,7 +486,7 @@
 	classmethod *cm = (classmethod *)self;
 	PyObject *callable;
 
-	if (!PyArg_ParseTuple(args, "O:callable", &callable))
+	if (!PyArg_ParseTuple(args, "O:classmethod", &callable))
 		return -1;
 	Py_INCREF(callable);
 	cm->cm_callable = callable;
@@ -618,7 +618,7 @@
 	staticmethod *sm = (staticmethod *)self;
 	PyObject *callable;
 
-	if (!PyArg_ParseTuple(args, "O:callable", &callable))
+	if (!PyArg_ParseTuple(args, "O:staticmethod", &callable))
 		return -1;
 	Py_INCREF(callable);
 	sm->sm_callable = callable;