You might be eating paleo, but your dog probably shouldn’t be.

The Food and Drug Administration is warning owners about the dangers of a grain-free dog food diet.

The FDA says foods that contain potatoes, peas, or lentils and/or other legumes as the main ingredients could lead to heart problems for your dog. The federal agency doesn’t name any specific brands but warns that dogs fed “grain-free” food were at risk of an enlarged heart.

The condition, which is more common in larger breed dogs, has been showing up in dogs that aren’t typically affected by it.