Error in the standby postgres server.

[#1]

Can someone let me know why I am getting this error? This instance is actually a standby postgres server

/opt/apigee/apigee-service/bin/apigee-service apigee-postgresql postgres-check-standby

pg_last_xlog_receive_location ------------------------------- (1 row) OK

Error: Postgres-Server reports being 'master' while postgres db is in 'slave' mode