diff --git a/cleanspec.mk b/cleanspec.mk
index a3d84fad4b..a36a9d3885 100644
--- a/cleanspec.mk
+++ b/cleanspec.mk
@@ -76,6 +76,7 @@ $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS/PinyinIMEGoogleS
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/com.android.inputmethod.pinyin.lib_intermediates)
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS/PinyinIMEGoogleService_intermediates)
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/framework_intermediates/src/telephony)
+$(call add-clean-step, rm -rf $(OUT_DIR)/target/product/*/obj)
 
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
diff --git a/core/combo/linux-arm.mk b/core/combo/linux-arm.mk
index b0cc51ca20..edd2df4f02 100644
--- a/core/combo/linux-arm.mk
+++ b/core/combo/linux-arm.mk
@@ -4,7 +4,7 @@
 # You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else
 ifeq ($(strip $($(combo_target)TOOLS_PREFIX)),)
 $(combo_target)TOOLS_PREFIX := \
-	prebuilt/$(HOST_PREBUILT_TAG)/toolchain/arm-eabi-4.3.1/bin/arm-eabi-
+	prebuilt/$(HOST_PREBUILT_TAG)/toolchain/arm-eabi-4.2.1/bin/arm-eabi-
 endif
 
 $(combo_target)CC := $($(combo_target)TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)