diff --git a/app/helpers/attachments_helper.rb b/app/helpers/attachments_helper.rb
index 367976515cde3abeddf85950cfcedc2b900a9f1d..0fce8c95be89d48b17674d6dfa25f9694f44fc18 100644
--- a/app/helpers/attachments_helper.rb
+++ b/app/helpers/attachments_helper.rb
@@ -28,7 +28,7 @@ module AttachmentsHelper
     end
   end
   
-  def to_utf8(str)
+  def to_utf8_for_attachments(str)
     if str.respond_to?(:force_encoding)
       str.force_encoding('UTF-8')
       return str if str.valid_encoding?
diff --git a/app/helpers/repositories_helper.rb b/app/helpers/repositories_helper.rb
index c8f6e8bfaf3ba8526667e15d7c4ee94ec0f71396..a007def08b18261af38f6a2f0576f4647fe84b67 100644
--- a/app/helpers/repositories_helper.rb
+++ b/app/helpers/repositories_helper.rb
@@ -116,7 +116,7 @@ module RepositoriesHelper
     output
   end
   
-  def to_utf8(str)
+  def to_utf8_for_repositories(str)
     return str if str.nil?
     str = to_utf8_internal(str)
     if str.respond_to?(:force_encoding)
diff --git a/app/helpers/timelog_helper.rb b/app/helpers/timelog_helper.rb
index d314a96f40f0b6bc099b67586799b378b280c968..1fad5fe5ac767f26e9121295e56643a6a3d55c54 100644
--- a/app/helpers/timelog_helper.rb
+++ b/app/helpers/timelog_helper.rb
@@ -144,7 +144,7 @@ module TimelogHelper
       headers = criterias.collect {|criteria| l(@available_criterias[criteria][:label]) }
       headers += periods
       headers << l(:label_total)
-      csv << headers.collect {|c| to_utf8(c) }
+      csv << headers.collect {|c| to_utf8_for_timelogs(c) }
       # Content
       report_criteria_to_csv(csv, criterias, periods, hours)
       # Total row
@@ -166,7 +166,7 @@ module TimelogHelper
       hours_for_value = select_hours(hours, criterias[level], value)
       next if hours_for_value.empty?
       row = [''] * level
-      row << to_utf8(format_criteria_value(criterias[level], value))
+      row << to_utf8_for_timelogs(format_criteria_value(criterias[level], value))
       row += [''] * (criterias.length - level - 1)
       total = 0
       periods.each do |period|
@@ -183,7 +183,7 @@ module TimelogHelper
     end
   end
   
-  def to_utf8(s)
+  def to_utf8_for_timelogs(s)
     @ic ||= Iconv.new(l(:general_csv_encoding), 'UTF-8')
     begin; @ic.iconv(s.to_s); rescue; s.to_s; end
   end
diff --git a/app/views/common/_diff.rhtml b/app/views/common/_diff.rhtml
index 03b06a0cec522302fd0bb8e244c61c77e47812c7..f7f40fb04fa4e3f329b31e3cdb42bedf76ad412e 100644
--- a/app/views/common/_diff.rhtml
+++ b/app/views/common/_diff.rhtml
@@ -31,7 +31,7 @@
 <% else -%>
 <table class="filecontent">
 <thead>
-<tr><th colspan="3" class="filename"><%=to_utf8 table_file.file_name %></th></tr>
+<tr><th colspan="3" class="filename"><%=to_utf8_for_attachments table_file.file_name %></th></tr>
 </thead>
 <tbody>
 <% table_file.each_line do |spacing, line| %>
@@ -44,7 +44,7 @@
   <th class="line-num"><%= line.nb_line_left %></th>
   <th class="line-num"><%= line.nb_line_right %></th>
   <td class="line-code <%= line.type_diff %>">
-    <pre><%=to_utf8 line.html_line %></pre>
+    <pre><%=to_utf8_for_attachments line.html_line %></pre>
   </td>
 </tr>
 <% end -%>
diff --git a/app/views/common/_file.rhtml b/app/views/common/_file.rhtml
index 13ad8bbda921e44dd5771f570e270a9b3b58f25b..6394268cb7b89c71bf5e215b6234fee23f524a91 100644
--- a/app/views/common/_file.rhtml
+++ b/app/views/common/_file.rhtml
@@ -2,7 +2,7 @@
 <table class="filecontent syntaxhl">
 <tbody>
 <% line_num = 1 %>
-<% syntax_highlight(filename, to_utf8(content)).each_line do |line| %>
+<% syntax_highlight(filename, to_utf8_for_attachments(content)).each_line do |line| %>
 <tr><th class="line-num" id="L<%= line_num %>"><a href="#L<%= line_num %>"><%= line_num %></a></th><td class="line-code"><pre><%= line %></pre></td></tr>
 <% line_num += 1 %>
 <% end %>
diff --git a/app/views/repositories/annotate.rhtml b/app/views/repositories/annotate.rhtml
index 498507148de0b09b1fc6897bb48fa2fb0b3b67b4..4a2244b66aca26ca4e7081b703eb6afe88ec5750 100644
--- a/app/views/repositories/annotate.rhtml
+++ b/app/views/repositories/annotate.rhtml
@@ -14,7 +14,7 @@
 <table class="filecontent annotate syntaxhl">
   <tbody>
     <% line_num = 1 %>
-    <% syntax_highlight(@path, to_utf8(@annotate.content)).each_line do |line| %>
+    <% syntax_highlight(@path, to_utf8_for_repositories(@annotate.content)).each_line do |line| %>
     <% revision = @annotate.revisions[line_num-1] %>
     <tr class="bloc-<%= revision.nil? ? 0 : colors[revision.identifier || revision.revision] %>">
       <th class="line-num" id="L<%= line_num %>"><a href="#L<%= line_num %>"><%= line_num %></a></th>
diff --git a/test/unit/helpers/repository_helper_test.rb b/test/unit/helpers/repository_helper_test.rb
index 23067ea5442bc3314c8c142429dbfdb5b86d9a33..ad8c4706a5ff28c15662f0df817589130789332e 100644
--- a/test/unit/helpers/repository_helper_test.rb
+++ b/test/unit/helpers/repository_helper_test.rb
@@ -20,7 +20,7 @@ require File.expand_path('../../../test_helper', __FILE__)
 class RepositoryHelperTest < HelperTestCase
   include RepositoriesHelper
 
-  def test_from_latin1_to_utf8
+  def test_from_latin1_to_utf8_for_repositories
     with_settings :repositories_encodings => 'UTF-8,ISO-8859-1' do
       s1 = "Texte encod\xc3\xa9"
       s2 = "Texte encod\xe9"
@@ -30,12 +30,12 @@ class RepositoryHelperTest < HelperTestCase
         s2.force_encoding("ASCII-8BIT")
         s3.force_encoding("UTF-8")
       end
-      assert_equal s1, to_utf8(s2)
-      assert_equal s1, to_utf8(s3)
+      assert_equal s1, to_utf8_for_repositories(s2)
+      assert_equal s1, to_utf8_for_repositories(s3)
     end
   end
 
-  def test_from_euc_jp_to_utf8
+  def test_from_euc_jp_to_utf8_for_repositories
     with_settings :repositories_encodings => 'UTF-8,EUC-JP' do
       s1 = "\xe3\x83\xac\xe3\x83\x83\xe3\x83\x89\xe3\x83\x9e\xe3\x82\xa4\xe3\x83\xb3"
       s2 = "\xa5\xec\xa5\xc3\xa5\xc9\xa5\xde\xa5\xa4\xa5\xf3"
@@ -45,12 +45,12 @@ class RepositoryHelperTest < HelperTestCase
         s2.force_encoding("ASCII-8BIT")
         s3.force_encoding("UTF-8")
       end
-      assert_equal s1, to_utf8(s2)
-      assert_equal s1, to_utf8(s3)
+      assert_equal s1, to_utf8_for_repositories(s2)
+      assert_equal s1, to_utf8_for_repositories(s3)
     end
   end
 
-  def test_to_utf8_should_be_converted_all_latin1_to_utf8
+  def test_to_utf8_for_repositories_should_be_converted_all_latin1_to_utf8
     with_settings :repositories_encodings => 'ISO-8859-1' do
       s1 = "\xc3\x82\xc2\x80"
       s2 = "\xC2\x80"
@@ -60,25 +60,25 @@ class RepositoryHelperTest < HelperTestCase
         s2.force_encoding("ASCII-8BIT")
         s3.force_encoding("UTF-8")
       end
-      assert_equal s1, to_utf8(s2)
-      assert_equal s1, to_utf8(s3)
+      assert_equal s1, to_utf8_for_repositories(s2)
+      assert_equal s1, to_utf8_for_repositories(s3)
     end
   end
 
-  def test_to_utf8_blank_string
-    assert_equal "",  to_utf8("")
-    assert_equal nil, to_utf8(nil)
+  def test_to_utf8_for_repositories_blank_string
+    assert_equal "",  to_utf8_for_repositories("")
+    assert_equal nil, to_utf8_for_repositories(nil)
   end
 
-  def test_to_utf8_returns_ascii_as_utf8
+  def test_to_utf8_for_repositories_returns_ascii_as_utf8
     s1 = "ASCII"
     s2 = s1.dup
     if s1.respond_to?(:force_encoding)
       s1.force_encoding("UTF-8")
       s2.force_encoding("ISO-8859-1")
     end
-    str1 = to_utf8(s1)
-    str2 = to_utf8(s2)
+    str1 = to_utf8_for_repositories(s1)
+    str2 = to_utf8_for_repositories(s2)
     assert_equal s1, str1
     assert_equal s1, str2
     if s1.respond_to?(:force_encoding)
@@ -87,10 +87,10 @@ class RepositoryHelperTest < HelperTestCase
     end
   end
 
-  def test_to_utf8_invalid_utf8_sequences_should_be_stripped
+  def test_to_utf8_for_repositories_invalid_utf8_sequences_should_be_stripped
     with_settings :repositories_encodings => '' do
       s1 = File.read("#{RAILS_ROOT}/test/fixtures/encoding/iso-8859-1.txt")
-      str = to_utf8(s1)
+      str = to_utf8_for_repositories(s1)
       if str.respond_to?(:force_encoding)
         assert_equal "Texte encod? en ISO-8859-1.", str
         assert str.valid_encoding?