watchOS: Wrong product name shown when asking for HealthKit authorization

I created a watchOS standalone app which uses HealthKit. When prompting the user for authorization, the Dialog shows the product name of the app extension (which is "MyApp WatchKit Extension"). I tried replacing $(PRODUCT_NAME) in the Info.plist file but that didn't change anything. The only thing that worked was changing the Product Name in the build settings. But that's not what I want to do. Any ideas?