diff --git a/lib/redmine/scm/adapters/abstract_adapter.rb b/lib/redmine/scm/adapters/abstract_adapter.rb
index 6c3101ec6..fec9de5c1 100644
--- a/lib/redmine/scm/adapters/abstract_adapter.rb
+++ b/lib/redmine/scm/adapters/abstract_adapter.rb
@@ -91,6 +91,10 @@ module Redmine
           @url
         end
 
+        def path_encoding
+          nil
+        end
+
         # get info about the svn repository
         def info
           return nil