diff --git a/SimG4Core/Physics/interface/G4ProcessTypeEnumerator.h b/SimG4Core/Physics/interface/G4ProcessTypeEnumerator.h
index daff62d11815d..d34a9616100f0 100644
--- a/SimG4Core/Physics/interface/G4ProcessTypeEnumerator.h
+++ b/SimG4Core/Physics/interface/G4ProcessTypeEnumerator.h
@@ -6,7 +6,7 @@
 class G4ProcessTypeEnumerator {
 public:
   G4ProcessTypeEnumerator();
-  ~G4ProcessTypeEnumerator();
+  ~G4ProcessTypeEnumerator() = default;
 
   inline unsigned int processId(const G4VProcess* p) const { return (p) ? p->GetProcessSubType() : 0; }
   inline int processIdLong(const G4VProcess* p) const { return (p) ? p->GetProcessSubType() : 0; }
diff --git a/SimG4Core/Physics/src/G4ProcessTypeEnumerator.cc b/SimG4Core/Physics/src/G4ProcessTypeEnumerator.cc
index 2426c4221209a..38313cb6f5e2a 100644
--- a/SimG4Core/Physics/src/G4ProcessTypeEnumerator.cc
+++ b/SimG4Core/Physics/src/G4ProcessTypeEnumerator.cc
@@ -2,14 +2,14 @@
 
 static const int nprocesses = 49;
 static const std::string g4processes[nprocesses] = {
-    "Primary",         "Transportation", "CoupleTrans",  "CoulombScat", "Ionisation",    "Brems",
-    "PairProdCharged", "Annih",          "AnnihToMuMu",  "AnnihToHad",  "NuclearStopp",  "Msc",
-    "Rayleigh",        "PhotoElectric",  "Compton",      "Conv",        "ConvToMuMu",    "Cerenkov",
-    "Scintillation",   "SynchRad",       "TransRad",     "OpAbsorp",    "OpBoundary",    "OpRayleigh",
-    "OpWLS",           "OpMieHG",        "DNAElastic",   "DNAExcit",    "DNAIonisation", "DNAVibExcit",
-    "DNAAttachment",   "DNAChargeDec",   "DNAChargeInc", "HadElastic",  "HadInelastic",  "HadCapture",
-    "HadFission",      "HadAtRest",      "HadCEX",       "Decay",       "DecayWSpin",    "DecayPiWSpin",
-    "DecayRadio",      "DecayUnKnown",   "DecayExt",     "GFlash",      "StepLimiter",   "UsrSpecCuts",
+    "Primary",         "Transportation", "CoupleTrans",  "CoulombScat",    "Ionisation",    "Brems",
+    "PairProdCharged", "Annih",          "AnnihToMuMu",  "AnnihToHad",     "NuclearStopp",  "Msc",
+    "Rayleigh",        "PhotoElectric",  "Compton",      "Conv",           "ConvToMuMu",    "Cerenkov",
+    "Scintillation",   "SynchRad",       "TransRad",     "OpAbsorp",       "OpBoundary",    "OpRayleigh",
+    "OpWLS",           "OpMieHG",        "MuDBrem",      "MuMuonPairProd", "DNAIonisation", "DNAVibExcit",
+    "DNAAttachment",   "DNAChargeDec",   "DNAChargeInc", "HadElastic",     "HadInelastic",  "HadCapture",
+    "HadFission",      "HadAtRest",      "HadCEX",       "Decay",          "DecayWSpin",    "DecayPiWSpin",
+    "DecayRadio",      "DecayUnKnown",   "DecayExt",     "GFlash",         "StepLimiter",   "UsrSpecCuts",
     "NeutronKiller"};
 static const int g4subtype[nprocesses] = {
     0,   // Primary generator
@@ -24,12 +24,15 @@ static const int g4subtype[nprocesses] = {
     7,   // AnnihToHad
     8,   // NuclearStopp
     10,  // Msc
-    11,  //
+    11,  // Rayleigh
     12,  // PhotoElectric
     13,  // Compton
     14,  // Conv
     15,  // ConvToMuMu
-    21,  22, 23, 24, 31, 32, 33, 34, 35, 51, 52, 53, 54, 55, 56, 57,
+    21,  22, 23, 24, 31, 32, 33, 34, 35,
+    40,  // muDBrem
+    49,  // MuMuonPairProd
+    53,  54, 55, 56, 57,
     111,  // HadElastic
     121,  // HadInelastic
     131,  // HadCapture
@@ -50,8 +53,6 @@ static const int g4subtype[nprocesses] = {
 
 G4ProcessTypeEnumerator::G4ProcessTypeEnumerator() {}
 
-G4ProcessTypeEnumerator::~G4ProcessTypeEnumerator() {}
-
 std::string G4ProcessTypeEnumerator::processG4Name(int idx) const {
   std::string res = "";
   for (int i = 0; i < nprocesses; ++i) {