diff --git a/Makefile b/Makefile
index 5f0e0826a35..d0fa9fb6015 100644
--- a/Makefile
+++ b/Makefile
@@ -69,7 +69,7 @@ roundcubemail-git: buildtools
 	(cd roundcubemail-git; find . -name '.gitignore' | xargs rm -f)
 	(cd roundcubemail-git; find . -name '.travis.yml' | xargs rm -f)
 	(cd roundcubemail-git; rm -rf tests plugins/*/tests .git* .tx* .ci* .editorconfig* index-test.php Dockerfile Makefile)
-	(cd roundcubemail-git; $(SEDI) 's/1.6-git/$(VERSION)/' index.php public_html/index.php program/include/iniset.php program/lib/Roundcube/bootstrap.php)
+	(cd roundcubemail-git; $(SEDI) 's/1.6-git/$(VERSION)/' index.php public_html/index.php installer/index.php program/include/iniset.php program/lib/Roundcube/bootstrap.php)
 	(cd roundcubemail-git; $(SEDI) 's/# Unreleased/# Release $(VERSION)'/ CHANGELOG.md)
 
 buildtools: /tmp/composer.phar