diff --git a/README.md b/README.md
index a9bd385c..5e1eb30e 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,6 @@ A [demo instance](http://lms-demo.poupon.dev) is available. Note the administrat
 
 ## Main features
 * Recommendation engine
-* Audio transcoding for maximum interoperability and reduced bandwith requirements
 * Multi-valued tags: `genre`, `mood`, `artists`, ...
 * Artist relationships: `composer`, `conductor`, `lyricist`, `mixer`, `performer`, `producer`, `remixer`
 * [Release types](https://musicbrainz.org/doc/Release_Group/Type): `album`, `single`, `EP`, `compilation`, `live`, ...
@@ -16,6 +15,8 @@ A [demo instance](http://lms-demo.poupon.dev) is available. Note the administrat
 * [ListenBrainz](https://listenbrainz.org) support for:
   * Scrobbling and synchronizing listens
   * Synchronizing 'love' feedbacks
+* Audio transcoding for maximum interoperability and reduced bandwith requirements
+* Multi-library support
 * ReplayGain support
 * User management, with several [authentication backends](INSTALL.md#authentication-backend)
 * [Subsonic/OpenSubsonic API](SUBSONIC.md) support
diff --git a/src/libs/database/impl/Migration.cpp b/src/libs/database/impl/Migration.cpp
index 017ca20e..1bcc8724 100644
--- a/src/libs/database/impl/Migration.cpp
+++ b/src/libs/database/impl/Migration.cpp
@@ -462,8 +462,8 @@ SELECT
 
     void migrateFromV57(Session& session)
     {
-        // useless index
-        session.getDboSession()->execute("DROP INDEX cluster_name_idx");
+        // useless index, may have been already removed in the previous step
+        session.getDboSession()->execute("DROP INDEX IF EXISTS cluster_name_idx");
     }
 
     void migrateFromV58(Session& session)