In accordance with Article 6 of Regulation (EC) No 396/2005, the applicant ADAMA Agriculture BV on behalf of ADAMA Makhteshim Ltd submitted a request to the competent national authority in Denmark to modify the existing maximum residue levels (MRL) for the active substance tau‐fluvalinate in tomatoes and watermelons. The data submitted in support of the request were found to be sufficient to derive an MRL proposal for tomatoes. For watermelons, a change of the MRL recently set in the EU legislation is not required. Adequate analytical methods for enforcement are available to control the residues of tau‐fluvalinate in the commodities under consideration. Based on the risk assessment results, EFSA concluded that the short‐term and long‐term intake of residues resulting from the intended uses of tau‐fluvalinate according to the reported agricultural practices is unlikely to present a risk to consumer health. The risk assessment shall be regarded as indicative.