diff --git a/ganttzk/src/main/resources/web/ganttz/zul/timetracker/secondlevelwithoutwatermark.zul b/ganttzk/src/main/resources/web/ganttz/zul/timetracker/secondlevelwithoutwatermark.zul
index 74c36ba10..59ce2ffd6 100644
--- a/ganttzk/src/main/resources/web/ganttz/zul/timetracker/secondlevelwithoutwatermark.zul
+++ b/ganttzk/src/main/resources/web/ganttz/zul/timetracker/secondlevelwithoutwatermark.zul
@@ -24,10 +24,10 @@
         <n:table style="width: ${top.horizontalSize+2}px;" class="second_level_">
 
             <n:tr class="z-columns">
-                <n:th class="z-column" forEach="${top.detailsSecondLevel}"
+                <n:td class="z-column" forEach="${top.detailsSecondLevel}"
                 style="width: ${each.size}px">
                 ${each.name}
-                </n:th>
+                </n:td>
             </n:tr>
         </n:table>
     </n:div>
diff --git a/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css b/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css
index ad7043d1e..2dde78e51 100644
--- a/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css
+++ b/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css
@@ -407,6 +407,15 @@ div.box.limiting-unassigned {
     border-collapse: collapse;
 }
 
+#timetrackerheader table.second_level_{
+    table-layout : fixed;
+}
+
+#timetrackerheader .second_level_ td {
+    -moz-box-sizing: border-box;
+    border-right: solid 1px #9EB6CE;
+}
+
 #timetracker .second_level_ tr {
     height: 14px;
 }