diff --git a/CleanSpec.mk b/CleanSpec.mk
index 07b3ece0784ae96b65ad80e5b68c03813124963f..020de69e308f7a0f1f3fb889bd8ed0793a58eee4 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -302,6 +302,9 @@ $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/app/*)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/APPS/*)
 
+# Move to libc++ as the default STL.
+$(call add-clean-step, rm -rf $(OUT_DIR))
+
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************