diff --git a/test/functional/repositories_mercurial_controller_test.rb b/test/functional/repositories_mercurial_controller_test.rb
index b324c9c18..06ee41aad 100644
--- a/test/functional/repositories_mercurial_controller_test.rb
+++ b/test/functional/repositories_mercurial_controller_test.rb
@@ -45,7 +45,7 @@ class RepositoriesMercurialControllerTest < Redmine::RepositoryControllerTest
   if Encoding.default_external.to_s != 'UTF-8'
     puts "TODO: Mercurial functional test fails " +
          "when Encoding.default_external is not UTF-8. " +
-         "Current value is '#{Encoding.default_external.to_s}'"
+         "Current value is '#{Encoding.default_external}'"
     def test_fake; assert true end
   elsif File.directory?(REPOSITORY_PATH)