diff --git a/Modules/sha1module.c b/Modules/sha1module.c
index c22437d..52098570 100644
--- a/Modules/sha1module.c
+++ b/Modules/sha1module.c
@@ -320,7 +320,7 @@ static void
 SHA1_dealloc(PyObject *ptr)
 {
     PyTypeObject *tp = Py_TYPE(ptr);
-    PyObject_Del(ptr);
+    PyObject_Free(ptr);
     Py_DECREF(tp);
 }