Funny and revealing hallucinations

While building a GUI, I stumbled across some funny and revealing hallucinations. The GUI contains a microphone mode. While saying nothing or something completely different, I'm often getting transcription snippets like this one:

"Untertitel im Auftrag des ZDF, 2020"

ZDF is a German television channel. Looks like the model was trained with data from it... :D

Is there a way to fix this?

If anyone is interested, I attached the code. Completely made with GPT4o: Main.zip