According to an article published in El Debate the poem “Mi hermano, el hombre” that appears in the front of the current 100 pesos note (MXP100.7) which is attributed to Nezahualcoyotl, was not written by him. Nezahualcoyotl was the poet king of the city state of Texcoco in the 15th century. He was also a philosopher and architect.

Patrick Johansson of the Universidad Nacional Autonoma de Mexico, an expert in the Nahuatl language, has stated that the poem is more recent. The Banco de Mexico is not the only one to make this mistake. This poem has also been attributed to Nezahualcoyotl in several publications.