diff --git a/src/libstore/sqlite.hh b/src/libstore/sqlite.hh
index b0e84f8ed..0c08267f7 100644
--- a/src/libstore/sqlite.hh
+++ b/src/libstore/sqlite.hh
@@ -29,7 +29,7 @@ enum class SQLiteOpenMode {
      * Use this mode if the database is on a read-only filesystem.
      * Fails with an error if the database does not exist.
      */
-    Immutable
+    Immutable,
 };
 
 /**