diff --git a/CleanSpec.mk b/CleanSpec.mk
index a94252d..0de72f5 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -171,6 +171,8 @@
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/framework-base_intermediates/src/core/java/android/print/)
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/framework-base_intermediates/src/core/java/android/printservice/)
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/framework-base_intermediates/src/packages/services/Proxy/)
+$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/framework-base_intermediates/src/core/java/android/print/IPrinterDiscoverySessionObserver.*)
+$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/framework-base_intermediates/src/core/java/android/print/IPrinterDiscoverySessionClient.*)
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************