diff --git a/Objects/floatobject.c b/Objects/floatobject.c
index 67f9e5d..8d83f00 100644
--- a/Objects/floatobject.c
+++ b/Objects/floatobject.c
@@ -124,7 +124,7 @@
             return PyErr_NoMemory();
     }
     /* Inline PyObject_New */
-    (void)PyObject_INIT(op, &PyFloat_Type);
+    (void)PyObject_INIT((PyObject *)op, &PyFloat_Type);
     op->ob_fval = fval;
     return (PyObject *) op;
 }