column does not exist error - Mailing list pgsql-general

Tearing my hair out, can anyone see what I'm doing wrong?

  SELECT title FROM node WHERE type=client;

ERROR:  column "client" does not exist
LINE 1: SELECT title FROM node WHERE type=client;

Yet this works:

 SELECT type FROM node;
  type
--------
 client
 client
 client
 client
 client
(5 rows)