diff --git a/SimG4CMS/Calo/src/HGCalSD.cc b/SimG4CMS/Calo/src/HGCalSD.cc
index 32e20d698e1e6..cf9bb067f4a86 100644
--- a/SimG4CMS/Calo/src/HGCalSD.cc
+++ b/SimG4CMS/Calo/src/HGCalSD.cc
@@ -156,6 +156,9 @@ uint32_t HGCalSD::setDetUnitId(const G4Step* aStep) {
     moduleLev = 2;
   }
   int module = touch->GetReplicaNumber(moduleLev);
+  if (verbose_ && (cell == -1))
+    edm::LogVerbatim("HGCSim") << "Top " << touch->GetVolume(0)->GetName() << " Module "
+                               << touch->GetVolume(moduleLev)->GetName();
 #ifdef EDM_ML_DEBUG
   edm::LogVerbatim("HGCSim") << "DepthsTop: " << touch->GetHistoryDepth() << ":" << levelT1_ << ":" << levelT2_ << ":"
                              << useSimWt_ << " name " << touch->GetVolume(0)->GetName() << " layer:module:cell "
diff --git a/SimG4CMS/Calo/test/python/Sim2026_cfg.py b/SimG4CMS/Calo/test/python/Sim2026_cfg.py
index 0d900f095482a..7e0a60e0da18f 100644
--- a/SimG4CMS/Calo/test/python/Sim2026_cfg.py
+++ b/SimG4CMS/Calo/test/python/Sim2026_cfg.py
@@ -83,6 +83,8 @@
 if 'MessageLogger' in process.__dict__:
     process.MessageLogger.G4cerr=dict()
     process.MessageLogger.HitStudy=dict()
+    process.MessageLogger.HGCSim=dict()
+#   process.MessageLogger.SensitiveDetector=dict()
 
 process.Timing = cms.Service("Timing")
 
diff --git a/SimG4Core/Geometry/src/SensitiveDetectorCatalog.cc b/SimG4Core/Geometry/src/SensitiveDetectorCatalog.cc
index 06047cf98856f..063fe4d75aaff 100644
--- a/SimG4Core/Geometry/src/SensitiveDetectorCatalog.cc
+++ b/SimG4Core/Geometry/src/SensitiveDetectorCatalog.cc
@@ -1,15 +1,15 @@
 #include "FWCore/MessageLogger/interface/MessageLogger.h"
 #include "SimG4Core/Geometry/interface/SensitiveDetectorCatalog.h"
 
-#define DEBUG
+#define EDM_ML_DEBUG
 
 #include <iostream>
 
 void SensitiveDetectorCatalog::insert(const std::string &cN, const std::string &rN, const std::string &lvN) {
   theClassNameMap[cN].insert(rN);
   theROUNameMap[rN].insert(lvN);
-#ifdef DEBUG
-  edm::LogVerbatim("SimG4CoreGeometry") << "SenstiveDetectorCatalog: insert (" << cN << "," << rN << "," << lvN << ")\n"
+#ifdef EDM_ML_DEBUG
+  edm::LogVerbatim("SensitiveDetector") << "SenstiveDetectorCatalog: insert (" << cN << "," << rN << "," << lvN << ")\n"
                                         << "                         has     " << readoutNames().size() << " ROUs "
                                         << readoutNames().front() << "\n"
                                         << "                         has     " << classNames().size() << " classes "
@@ -60,8 +60,8 @@ std::vector<std::string_view> SensitiveDetectorCatalog::classNames() const {
 }
 
 void SensitiveDetectorCatalog::printMe() const {
-  edm::LogVerbatim("SimG4CoreGeometry") << "Class names map size is: " << theClassNameMap.size() << "\n";
-  edm::LogVerbatim("SimG4CoreGeometry").log([&](auto &log) {
+  edm::LogVerbatim("SensitiveDetector") << "Class names map size is: " << theClassNameMap.size() << "\n";
+  edm::LogVerbatim("SensitiveDetector").log([&](auto &log) {
     int i(0);
     for (const auto &cn : theClassNameMap) {
       log << "#" << ++i << ": " << cn.first << " has " << cn.second.size() << " class names:\n";
@@ -71,20 +71,20 @@ void SensitiveDetectorCatalog::printMe() const {
     }
     log << "\n";
   });
-  edm::LogVerbatim("SimG4CoreGeometry") << "\nROU names map: " << theROUNameMap.size() << "\n";
-  edm::LogVerbatim("SimG4CoreGeometry").log([&](auto &log) {
+  edm::LogVerbatim("SensitiveDetector") << "\nROU names map: " << theROUNameMap.size() << "\n";
+  edm::LogVerbatim("SensitiveDetector").log([&](auto &log) {
     int i(0);
     for (const auto &rn : theROUNameMap) {
       log << "#" << ++i << ": " << rn.first << " has " << rn.second.size() << " ROU names:\n";
       for (const auto &rnv : rn.second)
-        log << rnv << ", ";
+        log << rnv << "\n ";
       log << "\n";
     }
     log << "\n";
   });
 
-  edm::LogVerbatim("SimG4CoreGeometry") << "\n========== Here are the accessors =================\n";
-  edm::LogVerbatim("SimG4CoreGeometry").log([&](auto &log) {
+  edm::LogVerbatim("SensitiveDetector") << "\n========== Here are the accessors =================\n";
+  edm::LogVerbatim("SensitiveDetector").log([&](auto &log) {
     for (auto c : classNames()) {
       log << "ClassName:" << c << "\n";
       for (auto r : readoutNames({c.data(), c.size()})) {
diff --git a/SimG4Core/SensitiveDetector/src/SensitiveDetector.cc b/SimG4Core/SensitiveDetector/src/SensitiveDetector.cc
index c2bca478d1e87..b1e65b28ddc2b 100644
--- a/SimG4Core/SensitiveDetector/src/SensitiveDetector.cc
+++ b/SimG4Core/SensitiveDetector/src/SensitiveDetector.cc
@@ -30,9 +30,10 @@ SensitiveDetector::SensitiveDetector(const std::string& iname, const SensitiveDe
   std::stringstream ss;
   for (auto& lvname : lvNames) {
     this->AssignSD({lvname.data(), lvname.size()});
-    ss << " " << lvname;
+    ss << " " << lvname << "\n";
   }
-  edm::LogVerbatim("SensitiveDetector") << " <" << iname << "> : Assigns SD to LVs " << ss.str();
+  edm::LogVerbatim("SensitiveDetector") << " <" << iname << "> : Assigns SD to " << lvNames.size() << " LVs "
+                                        << ss.str();
 }
 
 SensitiveDetector::~SensitiveDetector() {}