SOS…My gun fires when i disengage the safety

My baby desert eagle 9mm shoots when putting the firearm from safe to fire…..disengaging a safety shouldnt fire the weapon and id like to get other opinions on why before i go to a gunsmith

It hadnt been cleaned or used since 2014 so it could just be dirty but cleaning it with CLP and a microfiber cloth didnt help…..maybe its the trigger control group or a spring……idk so whats your opinion t