diff --git a/lib/redmine/scm/adapters/xitolite_adapter.rb b/lib/redmine/scm/adapters/xitolite_adapter.rb
index f599efce0..441e47113 100644
--- a/lib/redmine/scm/adapters/xitolite_adapter.rb
+++ b/lib/redmine/scm/adapters/xitolite_adapter.rb
@@ -92,7 +92,7 @@ def branches
           end
           @branches.sort!
         rescue ScmCommandAborted
-          nil
+          []
         end
 
 
@@ -105,7 +105,7 @@ def tags
           end
           @tags
         rescue ScmCommandAborted
-          nil
+          []
         end