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-rw-r--r--Modules/_tkinter.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Modules/_tkinter.c b/Modules/_tkinter.c
index 87bc7ae8ae..5f001c6e73 100644
--- a/Modules/_tkinter.c
+++ b/Modules/_tkinter.c
@@ -833,7 +833,7 @@ typedef struct {
} PyTclObject;
static PyObject *PyTclObject_Type;
-#define PyTclObject_Check(v) (Py_TYPE(v) == (PyTypeObject *) PyTclObject_Type)
+#define PyTclObject_Check(v) Py_IS_TYPE(v, (PyTypeObject *) PyTclObject_Type)
static PyObject *
newPyTclObject(Tcl_Obj *arg)