temperature compensation make sense？

In current control, it will compensate the current ki if temp compensate is enabled. Just as followed,

if (conf_now->foc_temp_comp && t > -30.0) {
        ki += ki * 0.00386 * (t - conf_now->foc_temp_comp_base_temp);
    }
 

Does the temp compensation really makes sense, and what is the magic num 0.00386 is?