diff --git a/lib/redmine/helpers/gantt.rb b/lib/redmine/helpers/gantt.rb
index 285eb66a0..406a818e1 100644
--- a/lib/redmine/helpers/gantt.rb
+++ b/lib/redmine/helpers/gantt.rb
@@ -631,7 +631,7 @@ module Redmine
             coords[:bar_start] = 0
           end
           if end_date < self.date_to
-            coords[:end] = end_date - self.date_from
+            coords[:end] = end_date - self.date_from + 1
             coords[:bar_end] = end_date - self.date_from + 1
           else
             coords[:bar_end] = self.date_to - self.date_from + 1
@@ -897,7 +897,7 @@ module Redmine
           if coords[:end]
             style = +""
             style << "top:#{params[:top]}px;"
-            style << "left:#{coords[:end] + params[:zoom]}px;"
+            style << "left:#{coords[:end]}px;"
             style << "width:15px;"
             output << view.content_tag(:div, '&nbsp;'.html_safe,
                                        :style => style,
@@ -1031,7 +1031,7 @@ module Redmine
             ])
           end
           if coords[:end]
-            x = params[:subject_width] + coords[:end] + params[:zoom]
+            x = params[:subject_width] + coords[:end]
             y = params[:top] - height / 2
             params[:image].fill('blue')
             params[:image].draw('polygon %d,%d %d,%d %d,%d %d,%d' % [