Correction to: URBAN DESIGN International https://doi.org/10.1057/s41289-021-00168-4

Due to an unfortunate oversight the sentence ‘The results of the upgrading strategy suggest that ‘action research’ can become a strategic tool for experimenting with alternative strategies in the revitalisation of informal settlements’ in the abstract section should read:

‘The results of this work suggest that ‘action research’ can become a critical tool for experimenting with alternative strategies in the revitalisation of informal settlements’.

The original article has been corrected.