fix dusty debugging macros
diff --git a/Objects/stringobject.c b/Objects/stringobject.c
index b09fc25..54f161f 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -508,7 +508,7 @@
 	}
 	/* XXX UNREF/NEWREF interface should be more symmetrical */
 #ifdef REF_DEBUG
-	--ref_total;
+	--_Py_RefTotal;
 #endif
 	UNREF(v);
 	*pv = (object *)