diff --git a/lib/redmine/helpers/gantt.rb b/lib/redmine/helpers/gantt.rb
index 4ff2ec944..a4b7a2f39 100644
--- a/lib/redmine/helpers/gantt.rb
+++ b/lib/redmine/helpers/gantt.rb
@@ -666,7 +666,7 @@ module Redmine
             assigned_string = l(:field_assigned_to) + ": " + issue.assigned_to.name
             s << view.avatar(issue.assigned_to,
                              :class => 'gravatar icon-gravatar',
-                             :size => 10,
+                             :size => 13,
                              :title => assigned_string).to_s.html_safe
           end
           s << view.link_to_issue(issue).html_safe
diff --git a/public/stylesheets/application.css b/public/stylesheets/application.css
index 7d2b662e1..93af529b2 100644
--- a/public/stylesheets/application.css
+++ b/public/stylesheets/application.css
@@ -1165,6 +1165,10 @@ div.wiki img {vertical-align:middle; max-width:100%;}
 .gantt_subjects { font-size: 0.8em; }
 .gantt_subjects div { line-height:16px;height:16px;overflow:hidden;white-space:nowrap;text-overflow: ellipsis; }

+.gantt_subjects .issue-subject img.icon-gravatar {
+  margin: 2px 5px 0px 2px;
+}
+
 .task {
   position: absolute;
   height:8px;