Index: test/functional/custom_fields_controller_test.rb
===================================================================
--- test/functional/custom_fields_controller_test.rb	(revision 12224)
+++ test/functional/custom_fields_controller_test.rb	(working copy)
@@ -80,6 +80,22 @@
     assert_select '[name=?]', 'custom_field[default_value]', 0
   end
 
+  def test_searchable_should_be_present_for_string_text_list_custom_field_formats_only
+    searchable_klasses = %w( IssueCustomField ProjectCustomField )
+    Redmine::CustomFieldFormat.available_formats.each do |format|
+      searchable_klasses.each do |sk|
+        get :new, :type => sk, :custom_field => {:field_format => format}
+        assert_response :success
+        case format
+          when 'string', 'text', 'list'
+            assert_select 'input[name=?][type=checkbox]', 'custom_field[searchable]', 1, format + " " + sk + " doesn't present searchable while it should"
+          when 'int', 'float', 'date', 'bool', 'user', 'version'
+            assert_select 'input[name=?][type=checkbox]', 'custom_field[searchable]', 0, format + " " + sk + " presents searchable while it shouldn't"
+        end
+      end
+    end
+  end
+
   def test_new_js
     get :new, :type => 'IssueCustomField', :custom_field => {:field_format => 'list'}, :format => 'js'
     assert_response :success
Index: app/views/custom_fields/_form.html.erb
===================================================================
--- app/views/custom_fields/_form.html.erb	(revision 12224)
+++ app/views/custom_fields/_form.html.erb	(working copy)
@@ -63,7 +63,9 @@
     <p><%= f.check_box :is_required %></p>
     <p><%= f.check_box :is_for_all %></p>
     <p><%= f.check_box :is_filter %></p>
-    <p><%= f.check_box :searchable %></p>
+    <% unless @custom_field.format_in? 'int', 'float', 'date', 'bool', 'user', 'version' %>
+      <p><%= f.check_box :searchable %></p>
+    <% end %>
     <p>
       <label><%= l(:field_visible) %></label>
       <label class="block">
@@ -92,7 +94,9 @@
 <% when "ProjectCustomField" %>
     <p><%= f.check_box :is_required %></p>
     <p><%= f.check_box :visible %></p>
-    <p><%= f.check_box :searchable %></p>
+    <% unless @custom_field.format_in? 'int', 'float', 'date', 'bool', 'user', 'version' %>
+      <p><%= f.check_box :searchable %></p>
+    <% end %>
     <p><%= f.check_box :is_filter %></p>
 
 <% when "VersionCustomField" %>