Git push to remote does not handle new branch

I've created a local branch. I want to push it to my remote git repository. If I try to do it through the dedicated menu (Tools->Git->Remote Repository->Push), I've got the error below.

It is obviously very simple to type the command outside QtCreator. Once done, subsequent push commands from QtCreator will succeed as the branch has been created on remote.

10:50 Running in D:\Cpp\Projets\Qt\GoogleSignIn: "D:\Program Files\Git\cmd\git.exe" push

fatal: The current branch fixconstant has no upstream branch.

To push the current branch and set the remote as upstream, use

git push --set-upstream origin fixconstant

The command "D:\Program Files\Git\cmd\git.exe" terminated with exit code 128.