diff --git a/set_user--1.0.sql b/set_user--1.0.sql
index 036e3da..0323d66 100644
--- a/set_user--1.0.sql
+++ b/set_user--1.0.sql
@@ -24,4 +24,6 @@ AS 'MODULE_PATHNAME', 'set_user'
 LANGUAGE C STRICT;
 
 REVOKE EXECUTE ON FUNCTION set_user(text) FROM PUBLIC;
+REVOKE EXECUTE ON FUNCTION set_user(text, text) FROM PUBLIC;
 GRANT EXECUTE ON FUNCTION reset_user() TO PUBLIC;
+GRANT EXECUTE ON FUNCTION reset_user(text) TO PUBLIC;