diff --git a/modules/activiti-engine/src/main/java/org/activiti/engine/impl/HistoricTaskInstanceQueryImpl.java b/modules/activiti-engine/src/main/java/org/activiti/engine/impl/HistoricTaskInstanceQueryImpl.java
index <HASH>..<HASH> 100644
--- a/modules/activiti-engine/src/main/java/org/activiti/engine/impl/HistoricTaskInstanceQueryImpl.java
+++ b/modules/activiti-engine/src/main/java/org/activiti/engine/impl/HistoricTaskInstanceQueryImpl.java
@@ -52,8 +52,8 @@ public class HistoricTaskInstanceQueryImpl extends AbstractVariableQueryImpl<His
   protected String taskName;
   protected String taskNameLike;
   protected String taskNameLikeIgnoreCase;
-  private List<String> taskNameList;
-  private List<String> taskNameListIgnoreCase;
+  protected List<String> taskNameList;
+  protected List<String> taskNameListIgnoreCase;
   protected String taskParentTaskId;
   protected String taskDescription;
   protected String taskDescriptionLike;
ACT-<I> member field access correction