For a short while Friday, Google Doodle honored Honinbo Shusaku, born on June 6, 1829. He was considered, by many, to be the greatest player of the traditional Chinese game Go. Another event occurred on June 6, 1944; It was called D-Day. Even though Google apologized  for the upload “in error,” and quickly replaced the doodle with a link to a special page commemorating the D-Day invasion, the Internet was outraged nonetheless.

“‘In error,’ is an accidental mistake. With Google, this isn’t an error, it is an ongoing repeated show of disrespect,” said one commenter at the conservative Daily Caller website.

Google told the Telegraph that the D-Day release had always been planned for June 6. The search engine company said it had even partnered with the Mémorial de Caen in France to create new D-Day-themed content for the Google Cultural Institute, to be displayed today.

“[Google] always intended to highlight a new exhibition of imagery and archive material commemorating D-Day on our home page,” Google Communications Director Peter Barron told the Telegraph. “Unfortunately a technical error crept in and for a short period this morning an international doodle also appeared. We’re sorry for the mistake, and we’re proud to honor those who took part in D-Day.”

This is not the first time Google Doodles have sparked controversy. Google landed itself in hot water in 2013 for honoring Cesar Chavez’s birthday over Easter, and in 2012, Fox News criticized the company for its lack of a Flag Day doodle, according to Ars Technica.