diff -r 6f1b70a41050 app/helpers/queries_helper.rb
--- a/app/helpers/queries_helper.rb	Wed Dec 14 12:06:30 2016 +0000
+++ b/app/helpers/queries_helper.rb	Mon Jan 02 09:58:42 2017 +0100
@@ -189,8 +189,10 @@
       content_tag('span',
         value.to_s(issue) {|other| link_to_issue(other, :subject => false, :tracker => false)}.html_safe,
         :class => value.css_classes_for(issue))
-    when :hours, :spent_hours, :total_spent_hours, :estimated_hours
+    when :hours, :estimated_hours
       format_hours(value)
+    when :spent_hours, :total_spent_hours
+      (value > 0) ? (link_to format_hours(value), issue_time_entries_path(issue)) : format_hours(value)
     else
       format_object(value)
     end