New error after JUCE update

I am having a new error while compiling on Android, after I moved from Juce 5.3 to 5.4.4:

Builds/development/modules\juce_gui_extra/native/juce_android_PushNotifications.cpp:1655:39: error: use of undeclared identifier ‘JUCE_PUSH_NOTIFICATIONS_ACTIVITY’

Android notifications are disabled in the proJucer.

Have you resaved the project, using the new version of the Projucer?

The only way that bit of the code will be compiled is if JUCE_PUSH_NOTIFICATIONS is set.

indeed, no error then. thank you.