Sports apparel company Nike pulled a new shoe design ahead of its planned sales date because former NFL quarterback Colin Kaepernick complained about its featured Betsy Ross American flag design.

Kaepernick told the company it shouldn’t sell a shoe with a symbol that he and others consider offensive because the flag marked an era when slavery existed in the United States, according to the Wall Street Journal. The Betsy Ross American flag is the nickname for the design of 13 stars that represents the 13 colonies arranged in a circle.