diff --git a/CleanSpec.mk b/CleanSpec.mk
index 76594fb448..1eca2a1c21 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -84,3 +84,4 @@ $(call add-clean-step, rm -f $(PRODUCT_OUT)/etc/init/android.hardware.audio@2.0-
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/bin/hw/android.hardware.cas@1.1*)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/etc/init/android.hardware.cas@1.1*)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/etc/vintf/manifest/android.hardware.cas@1.1*)
+$(call add-clean-step, rm -rf $(OUT_DIR)/soong/.intermediates/hardware/interfaces/wifi/1.4/android.hardware.wifi@1.4-adapter_genc++/)