diff --git a/app/views/projects/gantt.rhtml b/app/views/projects/gantt.rhtml
index 75e5b9fc5..21ef600a8 100644
--- a/app/views/projects/gantt.rhtml
+++ b/app/views/projects/gantt.rhtml
@@ -27,7 +27,7 @@ t_height = g_height + headers_height
 
 <h2><%= l(:label_gantt) %></h2>
 
-<% form_tag(params.merge(:month => nil, :year => nil, :years => nil)) do %>
+<% form_tag(params.merge(:month => nil, :year => nil, :months => nil)) do %>
 <table width="100%">
 <tr>
 <td align="left">