diff --git a/MuonSpectrometer/MuonGeoModelTest/src/MuonGMCheck.cxx b/MuonSpectrometer/MuonGeoModelTest/src/MuonGMCheck.cxx
index ba24b820013bea8355220e98e1ad522b30187b3f..c58417f2bee61de01226b0bf23b65fc5486d56e3 100644
--- a/MuonSpectrometer/MuonGeoModelTest/src/MuonGMCheck.cxx
+++ b/MuonSpectrometer/MuonGeoModelTest/src/MuonGMCheck.cxx
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
 */
 
 /***************************************************************************
@@ -2495,7 +2495,9 @@ void MuonGMCheck::buildCscRegionSelectorMap() {
         if (aux1 == 0 || aux3 == 0) {
             ATH_MSG_ERROR("There is something wrong in buildCscRegionSelectorMap!");
             ATH_MSG_ERROR("Variables aux1 and/or aux3 not initialized - Taking emergency exit!");
-            throw;
+            throw std::runtime_error("There is something wrong in buildCscRegionSelectorMap! "
+                                     "Variables aux1 and/or aux3 not initialized");
+                                     
         }
 
         ATH_MSG_INFO(extid << " hash Id " << Idhash << " new format " << new_extid);
diff --git a/MuonSpectrometer/MuonGeoModelTest/test/CheckDifferences.cxx b/MuonSpectrometer/MuonGeoModelTest/test/CheckDifferences.cxx
index 75f163f7f52d118d69b7449fd793c872ddddea60..912c53fae2e50fa9e2d19d4af0919ccd279d6af0 100644
--- a/MuonSpectrometer/MuonGeoModelTest/test/CheckDifferences.cxx
+++ b/MuonSpectrometer/MuonGeoModelTest/test/CheckDifferences.cxx
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
 */
 
 #include <fstream>
@@ -258,7 +258,7 @@ int MaterialMap::readMapRecord() {
             }
 
             std::string::size_type locapri;
-            std::string::size_type locchiudi;
+            std::string::size_type locchiudi = 0;
             if ((locapri = s.find('(')) != std::string::npos) {
                 if ((locchiudi = s.find(')', locapri + 1)) != std::string::npos) {
                     if (print_level < 1) std::cout << "first ( is at " << locapri << " first ) at " << locchiudi << std::endl;