diff --git a/app/views/gantts/show.html.erb b/app/views/gantts/show.html.erb
index 999f8f8162..f9c35ebc94 100644
--- a/app/views/gantts/show.html.erb
+++ b/app/views/gantts/show.html.erb
@@ -141,12 +141,12 @@
 
 <table class='gantt-table'>
 <tr>
-<td style="width:<%= subject_width %>px;" class="gantt_subjects_column">
+<td style="width:<%= @query.draw_selected_columns ? subject_width + 1 : subject_width + 2 %>px;" class="gantt_subjects_column">
   <%
     style  = ""
     style += "position:relative;"
     style += "height: #{t_height + 24}px;"
-    style += "width: #{subject_width}px;"
+    style += "width: #{subject_width + 1}px;"
   %>
   <%= content_tag(:div, :style => style, :class => "gantt_subjects_container #{'draw_selected_columns' if @query.draw_selected_columns}") do %>
     <%
@@ -159,7 +159,7 @@
     <%
       style  = ""
       style += "z-index: 1;"
-      style += "width: #{subject_width}px;"
+      style += "width: #{subject_width + 1}px;"
       style += "height: #{t_height}px;"
       style += 'overflow: hidden;'
     %>
diff --git a/public/stylesheets/application.css b/public/stylesheets/application.css
index 3f17d28c94..f4f4a8f788 100644
--- a/public/stylesheets/application.css
+++ b/public/stylesheets/application.css
@@ -1331,9 +1331,12 @@ table.gantt-table td {
   white-space: nowrap;
 
 }
-td.gantt_selected_column, td.gantt_selected_column .gantt_hdr,.gantt_selected_column_container {
+td.gantt_selected_column {
   width: 50px;
 }
+td.gantt_selected_column .gantt_hdr,.gantt_selected_column_container {
+  width: 49px;
+}
 
 .task {
   position: absolute;
diff --git a/public/stylesheets/responsive.css b/public/stylesheets/responsive.css
index 6bec535605..aa5502ee65 100644
--- a/public/stylesheets/responsive.css
+++ b/public/stylesheets/responsive.css
@@ -712,6 +712,7 @@
   .gantt_subjects_column .gantt_hdr {
     width: 100% !important;
     right: 0 !important; /* [2] */
+    border-right: solid 1px #c0c0c0;
   }
 
   #gantt_area {