diff --git a/Simulation/ISF/ISF_Core/ISF_Algorithms/src/SimHitTreeCreator.cxx b/Simulation/ISF/ISF_Core/ISF_Algorithms/src/SimHitTreeCreator.cxx
index e8d4d417193d920bf935324c64fed6b5b5042182..39e25fbebb6fe55ee42d165a558691104b26ab9f 100644
--- a/Simulation/ISF/ISF_Core/ISF_Algorithms/src/SimHitTreeCreator.cxx
+++ b/Simulation/ISF/ISF_Core/ISF_Algorithms/src/SimHitTreeCreator.cxx
@@ -144,11 +144,11 @@ StatusCode ISF::SimHitTreeCreator::fillSimHitsTree()
       HepMcParticleLink HMPL = (*ih).particleLink();
       this->addHepMcParticleLinkInfoToTree(HMPL);
 
-      ih++;
+      ++ih;
       while (ih!=mdtHits->end() && m_id==(*ih).MDTid() && m_barcode==(*ih).trackNumber() ) {
         // merge energy deposits and move on
         m_edeposit += (*ih).energyDeposit();
-        ih++;
+        ++ih;
       }
       m_t_simHits->Fill();
     }
@@ -168,11 +168,11 @@ StatusCode ISF::SimHitTreeCreator::fillSimHitsTree()
       HepMcParticleLink HMPL = (*ih).particleLink();
       this->addHepMcParticleLinkInfoToTree(HMPL);
 
-      ih++;
+      ++ih;
       while (ih!=rpcHits->end() && m_id==(*ih).RPCid() && m_barcode==(*ih).trackNumber() ) {
         // merge energy deposits and move on
         m_edeposit += (*ih).energyDeposit();
-        ih++;
+        ++ih;
       }
       m_t_simHits->Fill();
     }
@@ -192,11 +192,11 @@ StatusCode ISF::SimHitTreeCreator::fillSimHitsTree()
       HepMcParticleLink HMPL = (*ih).particleLink();
       this->addHepMcParticleLinkInfoToTree(HMPL);
 
-      ih++;
+      ++ih;
       while (ih!=tgcHits->end() && m_id==(*ih).TGCid() && m_barcode==(*ih).trackNumber() ) {
         // merge energy deposits and move on
         m_edeposit += (*ih).energyDeposit();
-        ih++;
+        ++ih;
       }
       m_t_simHits->Fill();
     }
@@ -216,11 +216,11 @@ StatusCode ISF::SimHitTreeCreator::fillSimHitsTree()
       HepMcParticleLink HMPL = (*ih).particleLink();
       this->addHepMcParticleLinkInfoToTree(HMPL);
 
-      ih++;
+      ++ih;
       while (ih!=cscHits->end() && m_id==(*ih).CSCid() && m_barcode==(*ih).trackNumber() ) {
         // merge energy deposits and move on
         m_edeposit += (*ih).energyDeposit();
-        ih++;
+        ++ih;
       }
       m_t_simHits->Fill();
     }
@@ -244,11 +244,11 @@ StatusCode ISF::SimHitTreeCreator::fillSimHitsTree()
         m_barcode = (*ih).trackNumber();
         this->addHepMcParticleLinkInfoToTree(HMPL);
 
-        ih++;
+        ++ih;
         while (ih!=pixHits->end() && ((unsigned int)m_id)==(*ih).identify() && m_barcode==(*ih).trackNumber() ) {
           // merge energy deposits and move on
           m_edeposit += (*ih).energyLoss();
-          ih++;
+          ++ih;
         }
         m_t_simHits->Fill();
       }
@@ -269,11 +269,11 @@ StatusCode ISF::SimHitTreeCreator::fillSimHitsTree()
         m_barcode = (*ih).trackNumber();
         this->addHepMcParticleLinkInfoToTree(HMPL);
 
-        ih++;
+        ++ih;
         while (ih!=sctHits->end() && ((unsigned int)m_id)==(*ih).identify() && m_barcode==(*ih).trackNumber() ) {
           // merge energy deposits and move on
           m_edeposit += (*ih).energyLoss();
-          ih++;
+          ++ih;
         }
         m_t_simHits->Fill();
       }
@@ -293,7 +293,7 @@ StatusCode ISF::SimHitTreeCreator::fillSimHitsTree()
         m_barcode = (*ih).GetTrackID();
         this->addHepMcParticleLinkInfoToTree(HMPL);
 
-        ih++;
+        ++ih;
         while (ih!=trtHits->end() && m_id==(*ih).GetHitID() && m_barcode==(*ih).GetTrackID() ) {
           // merge energy deposits and move on
           m_edeposit += (*ih).GetEnergyDeposit();
diff --git a/Simulation/ISF/ISF_Core/ISF_Services/src/GeoIDSvc.cxx b/Simulation/ISF/ISF_Core/ISF_Services/src/GeoIDSvc.cxx
index 59b803f57640066661a63353c2d63d365d7f65ae..b21062d9b7d1089c44303ee38d497f7441eb069b 100644
--- a/Simulation/ISF/ISF_Core/ISF_Services/src/GeoIDSvc.cxx
+++ b/Simulation/ISF/ISF_Core/ISF_Services/src/GeoIDSvc.cxx
@@ -196,7 +196,7 @@ StatusCode  ISF::GeoIDSvc::initialize()
     RadiusGeoIDPairSet::iterator radIt    = tmpRBinsGlobal[i].begin();
     RadiusGeoIDPairSet::iterator radItEnd = tmpRBinsGlobal[i].end();
     size_t                       ii = 0;
-    for ( ; radIt!=radItEnd; radIt++) {
+    for ( ; radIt!=radItEnd; ++radIt) {
       double curR = sqrt((*radIt).first);
       // skip this one if it has radius==0
       if (curR<m_tolerance) continue;
@@ -381,7 +381,7 @@ ISF::RZPairList* ISF::GeoIDSvc::prepareRZPairs( AtlasDetDescr::AtlasRegion geoID
     // loop over the (r,z) pairs in the given RZPairVector
     RZPairVector::const_iterator rzIt    = rz.begin();
     RZPairVector::const_iterator rzItEnd = rz.end();
-    for (; rzIt!=rzItEnd; rzIt++) {
+    for (; rzIt!=rzItEnd; ++rzIt) {
       const RZPair &curRZ = *rzIt;
       double   curZ = curRZ.second;
       int  curZSign = sign(curZ);
@@ -495,13 +495,13 @@ bool ISF::GeoIDSvc::checkSymmetric( RZPairList& positiveZ, RZPairList& negativeZ
   RZPairList::iterator negIt      = negativeZ.end();
 
   while ( posIt != posItEnd) {
-    negIt--;
+    --negIt;
 
     // require that deltaR and deltaZ are the same within bounds
     if ( fabs(negIt->first-posIt->first)>m_tolerance || fabs(negIt->second+posIt->second)>m_tolerance)
       return false;
 
-    posIt++;
+    ++posIt;
   }
 
   // all fine