diff --git a/app/views/wiki/history.rhtml b/app/views/wiki/history.rhtml
index 55620b66..e3c4ecc6 100644
--- a/app/views/wiki/history.rhtml
+++ b/app/views/wiki/history.rhtml
@@ -20,7 +20,7 @@
 <tr class="<%= cycle("odd", "even") %>">
     <td class="id"><%= link_to ver.version, :action => 'index', :page => @page.title, :version => ver.version %></td>
     <td class="checkbox"><%= radio_button_tag('version', ver.version, (line_num==1), :id => "cb-#{line_num}", :onclick => "$('cbto-#{line_num+1}').checked=true;") if show_diff && (line_num < @versions.size) %></td>
-    <td class="checkbox"><%= radio_button_tag('version_from', ver.version, (line_num==2), :id => "cbto-#{line_num}", :onclick => "if ($('cb-#{line_num}').checked==true || $('version_from').value > #{ver.version}) {$('cb-#{line_num-1}').checked=true;}") if show_diff && (line_num > 1) %></td>
+    <td class="checkbox"><%= radio_button_tag('version_from', ver.version, (line_num==2), :id => "cbto-#{line_num}") if show_diff && (line_num > 1) %></td>
     <td align="center"><%= format_time(ver.updated_on) %></td>
     <td><%= link_to_user ver.author %></td>
     <td><%=h ver.comments %></td>