We examine empirically whether environmental management practices (EMPs) (environmental audits, ISO 14001 standard, etc.) promote (or not) additional innovations delivering environmental benefits. Using a large sample of French firms (N=4114) and simultaneous equations model (SEM), we found that EMPs positively influence the decision of firms to introduce innovations delivering environmental benefits, but this positive relationship is moderated by market characteristics. The findings indicate that EMPs promote such environmental-related innovations when the market of the main activity of the firm is growing. However, when the market is uncertain or competitive, this relationship turns out to be negative.