diff --git a/.gitignore b/.gitignore
index d05f82856beec10162affaef4fcf0639d79b2ac3..c725108c4b7995613732ce0e7bb5315ae7760bbb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,6 +35,7 @@
 !/lib/plugins/authldap
 !/lib/plugins/authmysql
 !/lib/plugins/authpgsql
+!/lib/plugins/authplain
 !/lib/plugins/acl
 !/lib/plugins/config
 !/lib/plugins/info