This article discusses a number of pitfalls of the US-Tuna II Panel Report. This Report is interesting because it offers an occasion to reflect on some provisions of the Technical Barrier to Trade (TBT) Agreement, which may be crucial for the assessment of the legality of environmental labelling regimes. The most troubling part of the Report is the one dealing with the trade-restrictive nature of the measure. The Panel seems to have relied on a test by which if a measure does not reach its objectives perfectly, any other ineffective measures adopted with allegedly the same goals can be judged as a valid less-trade restrictive alternative. In other words, two wrongs seem to make a right in the view of the Panel; a conclusion that, for obvious reasons, will not be greeted with enthusiasm by environmentalists.