diff --git a/lib/redmine/scm/adapters/git_adapter.rb b/lib/redmine/scm/adapters/git_adapter.rb
index e6b5a761f..eedb7f52b 100644
--- a/lib/redmine/scm/adapters/git_adapter.rb
+++ b/lib/redmine/scm/adapters/git_adapter.rb
@@ -64,7 +64,7 @@ module Redmine
 
         def initialize(url, root_url=nil, login=nil, password=nil, path_encoding=nil)
           super
-          @path_encoding = path_encoding || 'UTF-8'
+          @path_encoding = path_encoding.blank? ? 'UTF-8' : path_encoding
           @flag_report_last_commit = SCM_GIT_REPORT_LAST_COMMIT
         end