In accordance with Article 6 of Regulation (EC) No 396/2005, the evaluating Member State (EMS), Belgium, compiled an application to modify the existing maximum residue level (MRL) for the active substance thiacloprid in Jerusalem artichokes. In order to accommodate for the intended use of thiacloprid Belgium proposed to raise the value of the existing MRL from the limit of quantification (LOQ) of 0.02 mg/kg to 0.05 mg/kg. Belgium drafted an evaluation report in accordance with Article 8 of Regulation (EC) No 396/2005, which was submitted to the European Commission and forwarded to EFSA. EFSA concludes to derive a MRL proposal of 0.05 mg/kg on Jerusalem artichokes by extrapolation of data from carrots. Adequate analytical enforcement methods are available to monitor the residues of thiacloprid on the commodity under consideration. Based on the risk assessment results, EFSA concludes that the proposed use of thiacloprid on Jerusalem artichokes will not result in a consumer exposure exceeding the toxicological reference values and therefore is unlikely to pose a consumer health risk.