As a result, he allied with FUJIWARA no Nobuyori and MINAMOTO no Yoshitomo and defeated Shinzei and was temporarily assigned with the position of Kawachi no kami (the governor of Kawachi Province) with the rank of Jugoinoi (Junior Fifth Rank).
このため、（平治元年）1159年の平治の乱においては藤原信頼・源義朝に同心して信西を討ち取り、一時的に従五位下河内守に任ぜられる。