diff --git a/MuonSpectrometer/MuonReconstruction/MuonRecExample/share/MuonRecOutputItemList_jobOptions.py b/MuonSpectrometer/MuonReconstruction/MuonRecExample/share/MuonRecOutputItemList_jobOptions.py
index 20be4a64712d3c6efab76c7028bf6e36d0e59d55..ed50b6477aaf7b3f14c8676178a809028292c4f8 100644
--- a/MuonSpectrometer/MuonReconstruction/MuonRecExample/share/MuonRecOutputItemList_jobOptions.py
+++ b/MuonSpectrometer/MuonReconstruction/MuonRecExample/share/MuonRecOutputItemList_jobOptions.py
@@ -107,7 +107,7 @@ if DetFlags.detdescr.Muon_on() and rec.doWriteESD():
          MuonESDList+=["MuonSimDataCollection#MDT_SDO"]
          MuonESDList+=["MuonSimDataCollection#RPC_SDO"]
          MuonESDList+=["MuonSimDataCollection#TGC_SDO"]
-         if MuonGeometryFlags.hasSTGC(): MuonESDList+=["MuonSimDataCollection#STGC_SDO"]
+         if MuonGeometryFlags.hasSTGC(): MuonESDList+=["MuonSimDataCollection#sTGC_SDO"]
          if MuonGeometryFlags.hasMM(): MuonESDList+=["MuonSimDataCollection#MM_SDO"]
 
    # commenting if-statement since mandatory for e.g. RPC calibration
diff --git a/MuonSpectrometer/MuonTruthAlgs/src/DetailedMuonPatternTruthBuilder.cxx b/MuonSpectrometer/MuonTruthAlgs/src/DetailedMuonPatternTruthBuilder.cxx
index 4993454fef51fffdc6b3b94fe278725aa85bca0d..c2804bd4cee2fb409ed2c1460ebb75dec09e193e 100755
--- a/MuonSpectrometer/MuonTruthAlgs/src/DetailedMuonPatternTruthBuilder.cxx
+++ b/MuonSpectrometer/MuonTruthAlgs/src/DetailedMuonPatternTruthBuilder.cxx
@@ -504,10 +504,10 @@ namespace Trk {
                             << "MM_SDO");
             return Amg::Vector3D(0, 0, 0);
         }
-        const MuonSimDataCollection* stgcSimDataMap = retrieveTruthCollection("STGC_SDO");
+        const MuonSimDataCollection* stgcSimDataMap = retrieveTruthCollection("sTGC_SDO");
         if (!stgcSimDataMap) {
             ATH_MSG_WARNING(" failed to retrieve MuonSimDataCollection: "
-                            << "STGC_SDO");
+                            << "sTGC_SDO");
             return Amg::Vector3D(0, 0, 0);
         }