diff --git a/src/if_py_both.h b/src/if_py_both.h
index 5603ac7..a679be5 100644
--- a/src/if_py_both.h
+++ b/src/if_py_both.h
@@ -5397,7 +5397,7 @@
 {
     RangeObject *self = (RangeObject*)self_obj;
     PyObject_GC_UnTrack((void *)(self));
-    Py_XDECREF(self->buf);
+    Py_XDECREF(((PyObject *)(self->buf)));
     PyObject_GC_Del((void *)(self));
 }