diff --git a/core/base/CbmDaq.cxx b/core/base/CbmDaq.cxx
index 2776d93622b31b3e0402fd8124411bce7e22da78..9f07f7262446992d3d4075a058165043d2475688 100644
--- a/core/base/CbmDaq.cxx
+++ b/core/base/CbmDaq.cxx
@@ -242,6 +242,9 @@ ULong64_t CbmDaq::FillTimeSlice(Bool_t timeLimit, Double_t tMax) {
       nData = digitizer.second->FillTimeSlice(fTimeSlice, tMax);
     else
       nData = digitizer.second->FillTimeSlice(fTimeSlice);
+    LOG(debug) << GetName() << ": "
+               << CbmModuleList::GetModuleNameCaps(digitizer.first) << " "
+               << fTimeSlice->ToString();
     ss << " " << CbmModuleList::GetModuleNameCaps(digitizer.first) << " "
        << nData;
     nDataAll += nData;