Index: modules/test-db/src/test/java/org/jbpm/test/history/HistoryTaskDetailTest.java
===================================================================
--- modules/test-db/src/test/java/org/jbpm/test/history/HistoryTaskDetailTest.java	(revision 6476)
+++ modules/test-db/src/test/java/org/jbpm/test/history/HistoryTaskDetailTest.java	(working copy)
@@ -24,6 +24,7 @@
 import java.util.Date;
 import java.util.List;
 
+import org.jbpm.api.ProcessInstance;
 import org.jbpm.api.TaskService;
 import org.jbpm.api.cmd.Environment;
 import org.jbpm.api.cmd.VoidCommand;
@@ -85,6 +86,24 @@
     assertEquals(1, historyService.createHistoryDetailQuery().list().size());
   }
 
+  public void testHistoryTaskComment() {
+    ProcessInstance processInstance = executionService.startProcessInstanceByKey("HistoryTaskDetail");
+    String processInstanceId = processInstance.getId();
+
+    List<Task> tasks = taskService.findPersonalTasks("johndoe");
+    assertEquals(1, tasks.size());
+    String taskId = tasks.get(0).getId();
+    taskService.addTaskComment(taskId, "Hello world.");
+
+    assertEquals(1, historyService.createHistoryDetailQuery().list().size());
+
+    assertEquals(1, historyService.createHistoryDetailQuery()
+                                  .processInstanceId(processInstanceId)
+                                  .comments()
+                                  .list()
+                                  .size());
+  }
+
   private static class TaskReassignCmd extends VoidCommand {
     private String taskId;
     private String newAssignee;