diff --git a/app/controllers/projects_controller.rb b/app/controllers/projects_controller.rb
index fc33336a0..a7efa4695 100644
--- a/app/controllers/projects_controller.rb
+++ b/app/controllers/projects_controller.rb
@@ -221,7 +221,7 @@ class ProjectsController < ApplicationController
     @days = Setting.activity_days_default.to_i
     
     if params[:from]
-      begin; @date_to = params[:from].to_date; rescue; end
+      begin; @date_to = params[:from].to_date + 1; rescue; end
     end
 
     @date_to ||= Date.today + 1
diff --git a/app/views/projects/activity.rhtml b/app/views/projects/activity.rhtml
index 01f7a3e59..5157dda7a 100644
--- a/app/views/projects/activity.rhtml
+++ b/app/views/projects/activity.rhtml
@@ -22,14 +22,14 @@
 
 <div style="float:left;">
 <%= link_to_remote(('&#171; ' + l(:label_previous)), 
-                   {:update => "content", :url => params.merge(:from => @date_to - @days), :complete => 'window.scrollTo(0,0)'},
-                   {:href => url_for(params.merge(:from => @date_to - @days)),
+                   {:update => "content", :url => params.merge(:from => @date_to - @days - 1), :complete => 'window.scrollTo(0,0)'},
+                   {:href => url_for(params.merge(:from => @date_to - @days - 1)),
                     :title => "#{l(:label_date_from)} #{format_date(@date_to - 2*@days)} #{l(:label_date_to).downcase} #{format_date(@date_to - @days - 1)}"}) %>
 </div>
 <div style="float:right;">
 <%= link_to_remote((l(:label_next) + ' &#187;'), 
-                   {:update => "content", :url => params.merge(:from => @date_to + @days), :complete => 'window.scrollTo(0,0)'},
-                   {:href => url_for(params.merge(:from => @date_to + @days)),
+                   {:update => "content", :url => params.merge(:from => @date_to + @days - 1), :complete => 'window.scrollTo(0,0)'},
+                   {:href => url_for(params.merge(:from => @date_to + @days - 1)),
                     :title => "#{l(:label_date_from)} #{format_date(@date_to)} #{l(:label_date_to).downcase} #{format_date(@date_to + @days - 1)}"}) unless @date_to >= Date.today %>
 </div>
 &nbsp;