Correct icon not showing in the dock
I installed the 'Notability' application on my macbook pro 2016 with touchbar, running on Sierra 10.12.3.
In finder, the correct icon is showing:
In launchpad, also the correct icon is showing:
However, when I launch the application, which works perfectly, the following icon is shown in the dock:
How to fix this in order for the correct icon also to show in the dock?
Thanks for your help!
MacBook Pro with Retina display, macOS Sierra (10.12.3)