It the calibration for STPM32 performed at 50Hz still valid for 60Hz line frequency?

Dear all, we are using the STPM32, and we calibrate it with a 50Hz load. In some cases, customers need to use it at 60Hz. Is the accuracy obtained from the calibration still valid? On documents, I can't find this in formation.The only statement is: "Setting the default line frequency through REF_FREQ bit in register DSP_CR3 speeds up the period calculation algorithm convergence". We can change this bit with firmware, but I wonder if the accuracy doe'snt change. Thanks in advance.