diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index d9f3372..66e6232 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -114,6 +114,7 @@
 LOCAL_PROTOC_FLAGS:=
 LOCAL_NO_CRT:=
 LOCAL_PROPRIETARY_MODULE:=
+LOCAL_CTS_TEST_PACKAGE:=
 
 # Trim MAKEFILE_LIST so that $(call my-dir) doesn't need to
 # iterate over thousands of entries every time.