Index: openacs-4/packages/acs-kernel/sql/postgresql/postgresql.sql
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-kernel/sql/postgresql/postgresql.sql,v
diff -u -r1.47.2.1 -r1.47.2.2
--- openacs-4/packages/acs-kernel/sql/postgresql/postgresql.sql	13 Sep 2014 09:46:19 -0000	1.47.2.1
+++ openacs-4/packages/acs-kernel/sql/postgresql/postgresql.sql	28 Mar 2019 19:36:03 -0000	1.47.2.2
@@ -948,7 +948,7 @@
  return description;
 
 END;
-$$ LANGUAGE plpgsql with (iscachable);
+$$ LANGUAGE plpgsql IMMUTABLE;
 
 
 -- added
