Correction to: Nature Cell Biology https://www.nature.com/articles/s41556-018-0093-4, published online 23 April 2018.

In the version of the article initially published, due to a figure preparation error, in Fig. 6g, the siSetdb1 panel was an inadvertent duplicate of the siZfp809 panel directly below. Due to the age of the article, the figure cannot be replaced directly; the Supplementary information available alongside this amendment serves to update the figure.