diff --git a/db/migrate/20100221100219_add_index_on_changesets_scmid.rb b/db/migrate/20100221100219_add_index_on_changesets_scmid.rb
new file mode 100644
index 000000000..96d85a3a7
--- /dev/null
+++ b/db/migrate/20100221100219_add_index_on_changesets_scmid.rb
@@ -0,0 +1,9 @@
+class AddIndexOnChangesetsScmid < ActiveRecord::Migration
+  def self.up
+    add_index :changesets, [:repository_id, :scmid], :name => :changesets_repos_scmid
+  end
+
+  def self.down
+    remove_index :changesets, :name => :changesets_repos_scmid
+  end
+end