diff -ur --exclude '*~' --exclude '*#' --new-file -r orig-modules/masquerade/masquerade.install modules/masquerade/masquerade.install
--- orig-modules/masquerade/masquerade.install	2009-03-06 19:34:28.000000000 +0000
+++ modules/masquerade/masquerade.install	2009-03-21 05:28:08.000000000 +0000
@@ -80,7 +80,7 @@
       $ret[] = update_sql("ALTER TABLE {masquerade} CHANGE `sid` `sid` VARCHAR(64) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL default ''");
       break;
     case 'pgsql':
-      $ret[] = update_sql("ALTER TABLE {masquerade} CHANGE `sid` `sid` VARCHAR(64) NOT NULL default ''");
+      $ret[] = update_sql("ALTER TABLE {masquerade} ALTER COLUMN sid TYPE VARCHAR(64)");
       break;
   }
   return $ret;