Zèbra (Frans de Waard and Roel Meelkop) are forced to change their name. An American band named Zebra doesn’t like other bands to use that name, so they hunt them down and smoke ‘m out of their caves. They own the trademark to ‘Zebra’ for entertainment purposes since 1974.
As you may or may not know Zèbra contracts Zeeman and Wibra. From the letters they didn’t use from those names to make up Zèbra they now created a new name, Wieman. Meeuw supplied them with a fitting new logo.