diff --git a/thorlcr/activities/hashdistrib/thhashdistribslave.cpp b/thorlcr/activities/hashdistrib/thhashdistribslave.cpp
index b2e5f034417..a2fc290cf8c 100644
--- a/thorlcr/activities/hashdistrib/thhashdistribslave.cpp
+++ b/thorlcr/activities/hashdistrib/thhashdistribslave.cpp
@@ -859,7 +859,11 @@ class CDistributorBase : implements IHashDistributor, implements IExceptionHandl
                     }
                     if (aborted)
                         break;
-                    const void *row = input->ungroupedNextRow();
+                    const void *row;
+                    {
+                        LookAheadTimer t(owner.activity->getActivityTimerAccumulator(), owner.activity->queryTimeActivities());
+                        row = input->ungroupedNextRow();
+                    }
                     if (!row)
                         break;
 
@@ -1060,7 +1064,7 @@ class CDistributorBase : implements IHashDistributor, implements IExceptionHandl
         ::ActPrintLogEx(&activity->queryContainer(), e, thorlog_all, MCexception(e), "%s", msg.str());
     }
 protected:
-    CActivityBase *activity;
+    CSlaveActivity *activity;
     size32_t inputBufferSize, pullBufferSize;
     unsigned writerPoolSize;
     unsigned self;
@@ -1078,7 +1082,7 @@ class CDistributorBase : implements IHashDistributor, implements IExceptionHandl
 public:
     IMPLEMENT_IINTERFACE_USING(CInterface);
 
-    CDistributorBase(CActivityBase *_activity, bool _doDedup, bool _isall, IStopInput *_istop, const char *_id)
+    CDistributorBase(CSlaveActivity *_activity, bool _doDedup, bool _isall, IStopInput *_istop, const char *_id)
         : activity(_activity), recvthread(this), sendthread(this), sender(*this), id(_id)
     {
         aborted = connected = false;
@@ -1530,7 +1534,7 @@ class CRowDistributor: public CDistributorBase
     ICommunicator &comm;
     bool stopping;
 public:
-    CRowDistributor(CActivityBase *activity, ICommunicator &_comm, mptag_t _tag, bool doDedup, bool isAll, IStopInput *istop, const char *id)
+    CRowDistributor(CSlaveActivity *activity, ICommunicator &_comm, mptag_t _tag, bool doDedup, bool isAll, IStopInput *istop, const char *id)
         : CDistributorBase(activity, doDedup, isAll, istop, id), comm(_comm), tag(_tag)
     {
         stopping = false;
@@ -1791,7 +1795,7 @@ class CRowPullDistributor: public CDistributorBase
         selfdone.reinit();
     }
 public:
-    CRowPullDistributor(CActivityBase *activity, ICommunicator &_comm, mptag_t _tag, bool doDedup, IStopInput *istop, const char *id)
+    CRowPullDistributor(CSlaveActivity *activity, ICommunicator &_comm, mptag_t _tag, bool doDedup, IStopInput *istop, const char *id)
         : CDistributorBase(activity, doDedup, false, istop, id), comm(_comm), tag(_tag)
     {
         pull = true;
@@ -2086,12 +2090,12 @@ class CRowPullDistributor: public CDistributorBase
 //==================================================================================================
 
 
-IHashDistributor *createHashDistributor(CActivityBase *activity, ICommunicator &comm, mptag_t tag, bool doDedup, bool isAll, IStopInput *istop, const char *id)
+IHashDistributor *createHashDistributor(CSlaveActivity *activity, ICommunicator &comm, mptag_t tag, bool doDedup, bool isAll, IStopInput *istop, const char *id)
 {
     return new CRowDistributor(activity, comm, tag, doDedup, isAll, istop, id);
 }
 
-IHashDistributor *createPullHashDistributor(CActivityBase *activity, ICommunicator &comm, mptag_t tag, bool doDedup, IStopInput *istop, const char *id=NULL)
+IHashDistributor *createPullHashDistributor(CSlaveActivity *activity, ICommunicator &comm, mptag_t tag, bool doDedup, IStopInput *istop, const char *id=NULL)
 {
     return new CRowPullDistributor(activity, comm, tag, doDedup, istop, id);
 }
diff --git a/thorlcr/activities/hashdistrib/thhashdistribslave.ipp b/thorlcr/activities/hashdistrib/thhashdistribslave.ipp
index 862ec32bdd9..900d2f0bf11 100644
--- a/thorlcr/activities/hashdistrib/thhashdistribslave.ipp
+++ b/thorlcr/activities/hashdistrib/thhashdistribslave.ipp
@@ -36,7 +36,7 @@ interface IHashDistributor : extends IInterface
 
 interface IStopInput;
 IHashDistributor *createHashDistributor(
-    CActivityBase *activity,
+    CSlaveActivity *activity,
     ICommunicator &comm, 
     mptag_t tag, 
     bool dedup,