Index: app/views/issues/index.api.rsb
===================================================================
--- app/views/issues/index.api.rsb	(revision 13933)
+++ app/views/issues/index.api.rsb	(working copy)
@@ -19,6 +19,7 @@
       api.done_ratio  issue.done_ratio
       api.is_private  issue.is_private
       api.estimated_hours issue.estimated_hours
+      api.spent_hours(issue.spent_hours) if User.current.allowed_to?(:view_time_entries, @project)
 
       render_api_custom_values issue.visible_custom_field_values, api