THIS note corrects an error in our paper, "An Efficient Game Form for Multi-Rate Multicast Service Provisioning" (reference [1]), which presents a rate allocation mechanism for multi-rate multicast service provisioning in networks with arbitrary topology and strategic users. The mechanism presented in [1] includes a tax function which is not differentiable with respect to the rate allocations. To obtain a Nash implementation, however, we need a tax function that is differentiable with respect to these allocations. We correct this error as follows.We consider the problem formulated in [1]. We use the same notation as in [1]. To help the reader, we repeat here the notation used in this note.