Default Loose headphone jack

Hi I've noticed a problem that my last htc one m7 doesn't have.
When I plugged the headphone in the phone the jack is a little bit loose.
if I pull the headphone wire is released by one notch and it sounds only the right ear.
It's not a big problem but I've tried also with onether htc one m8 and it shoes the same exact problem.
Do you know a way to fix it?
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