diff --git a/app/controllers/repositories_controller.rb b/app/controllers/repositories_controller.rb
index 3e4584ea..72104d57 100644
--- a/app/controllers/repositories_controller.rb
+++ b/app/controllers/repositories_controller.rb
@@ -226,7 +226,7 @@ class RepositoriesController < ApplicationController
   end
 
   def show_error_not_found
-    render_error l(:error_scm_not_found)
+    render_error :message => l(:error_scm_not_found), :status => 404
   end
   
   # Handler for Redmine::Scm::Adapters::CommandFailed exception
diff --git a/test/functional/repositories_git_controller_test.rb b/test/functional/repositories_git_controller_test.rb
index e08c41b4..53b5ea7c 100644
--- a/test/functional/repositories_git_controller_test.rb
+++ b/test/functional/repositories_git_controller_test.rb
@@ -192,7 +192,7 @@ class RepositoriesGitControllerTest < ActionController::TestCase
       @repository.reload
       ['', ' ', nil].each do |r|
         get :revision, :id => 1, :rev => r
-        assert_response 500
+        assert_response 404
         assert_error_tag :content => /was not found/
       end
     end
diff --git a/test/functional/repositories_mercurial_controller_test.rb b/test/functional/repositories_mercurial_controller_test.rb
index b565863c..de382bbb 100644
--- a/test/functional/repositories_mercurial_controller_test.rb
+++ b/test/functional/repositories_mercurial_controller_test.rb
@@ -201,7 +201,7 @@ class RepositoriesMercurialControllerTest < ActionController::TestCase
       @repository.reload
       ['', ' ', nil].each do |r|
         get :revision, :id => 1, :rev => r
-        assert_response 500
+        assert_response 404
         assert_error_tag :content => /was not found/
       end
     end
diff --git a/test/functional/repositories_subversion_controller_test.rb b/test/functional/repositories_subversion_controller_test.rb
index 5478cee2..1a13797d 100644
--- a/test/functional/repositories_subversion_controller_test.rb
+++ b/test/functional/repositories_subversion_controller_test.rb
@@ -168,14 +168,14 @@ class RepositoriesSubversionControllerTest < ActionController::TestCase
     
     def test_invalid_revision
       get :revision, :id => 1, :rev => 'something_weird'
-      assert_response 500
+      assert_response 404
       assert_error_tag :content => /was not found/
     end
 
     def test_empty_revision
       ['', ' ', nil].each do |r|
         get :revision, :id => 1, :rev => r
-        assert_response 500
+        assert_response 404
         assert_error_tag :content => /was not found/
       end
     end