  We correct an error and some inaccuracies that occurred in "Deformed
Calabi-Yau completions''. The most important point is that, as pointed out by
W. K. Yeung, to show that the deformed Calabi-Yau completion has the Calabi-Yau
property, one needs to assume that the deformation parameter comes from
negative cyclic homology. Notice that this does hold in the case of Ginzburg dg
algebras.
