The Louvre Abu Dhabi said Monday it has replaced a map of the Arabian Peninsula that omitted Qatar.
The museum said the map was an "oversight" that had been rectified.
The map, one of several aiming at placing exhibits in their geographical context, was located in the children's section of the museum.
The following day, Emirati foreign minister Anwar Gargash said he had been "mystified" by Al-Thani's tweet, which "blew a slight oversight out of proportion".
"Culture is superior to such trifles," he added.
The Louvre Abu Dhabi was inaugurated with great pomp in November by French President Emmanuel Macron and Abu Dhabi's Crown Prince Mohammed bin Zayed Al-Nahyan.
It was marketed as "a universal museum" celebrating cultural exchange and tolerance.
The UAE and Qatar have long had sour relations, but they worsened last year when Saudi Arabia, the UAE, Bahrain and Egypt in June cut all ties with Doha, including land, sea and air link over its support of extremism.
*With AFPFor all the latest art news from the UAE and Gulf countries, follow us on Twitter and Linkedin, like us on Facebook and subscribe to our YouTube page, which is updated daily.