diff --git a/external/usb_modeswitch/usb_modeswitch/Android.mk b/external/usb_modeswitch/usb_modeswitch/Android.mk
index f96c35e8e63..c8060e5aec7 100644
--- a/external/usb_modeswitch/usb_modeswitch/Android.mk
+++ b/external/usb_modeswitch/usb_modeswitch/Android.mk
@@ -13,8 +13,9 @@ LOCAL_SHARED_LIBRARIES := libusb liblog libutils libcutils
 
 LOCAL_CFLAGS += -Wno-self-assign -Wno-sometimes-uninitialized
 
-$(shell mkdir -p $(PRODUCT_OUT)/vendor/etc)
-$(shell cp -R $(LOCAL_PATH)/usb_modeswitch.d $(PRODUCT_OUT)/vendor/etc)
+LOCAL_POST_INSTALL_CMD := \
+    mkdir -p $(PRODUCT_OUT)/vendor/etc; \
+    cp -dfRu --preserve=timestamps $(LOCAL_PATH)/usb_modeswitch.d $(PRODUCT_OUT)/vendor/etc/;
 
 include $(BUILD_EXECUTABLE)