A Texas mother caused McGraw-Hill Education to revise a textbook that was "downplaying" slavery by including African slaves in a chapter on immigrants.

Roni Dean-Burren posted a photo of the section in the textbook to her Facebook page that reads, "The Atlantic Slave Trade between the 1500s and 1800s brought millions of workers from Africa to the southern United States to work on agricultural plantations."

Dean-Burren said her son showed her the image.

"Notice the nuanced language there," she captioned the post. "Workers implies wages..."

McGraw-Hill Education acknowledged her concerns and plans on making revisions to the textbook for the next print run. Revisions to the digital textbook will be made immediately.

"We conducted a close review of the content and agree that our language in that caption did not adequately convey that Africans were both forced into migration and to labor against their will as slaves," the company said in a statement on its Facebook page on Friday.

"We will update this caption to describe the arrival of African slaves in the U.S. as a forced migration and emphasize that their work was done as slave labor," the statement continued.

A spokeswoman for McGraw-Hill told ABC News that nearly 150,000 copies of the textbook are currently being used in Texas schools. She added that the digital revisions, which are set to go into effect immediately, are still being worked on as of Tuesday.

Dean-Burren argued there should be an immediate change in the print textbook as well, saying, "A lot of schools don't use digital versions, and we know this [print] textbook is going to sit in schools eight to ten years."

The company offered to give students who are currently using the textbook a sticker to cover the caption. Students can also request a new and revised textbook.

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