diff --git a/modoboa_installer/scripts/files/dovecot/postlogin-postgres.sh.tpl b/modoboa_installer/scripts/files/dovecot/postlogin-postgres.sh.tpl
index a556ecb..e91ac2d 100644
--- a/modoboa_installer/scripts/files/dovecot/postlogin-postgres.sh.tpl
+++ b/modoboa_installer/scripts/files/dovecot/postlogin-postgres.sh.tpl
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+PATH="/usr/bin:/usr/local/bin:/bin"
+
 psql -c "UPDATE core_user SET last_login=now() WHERE username='$USER'" > /dev/null
 
 exec "$@"