diff --git a/HLTrigger/JetMET/interface/HLTHcalMETNoiseCleaner.h b/HLTrigger/JetMET/interface/HLTHcalMETNoiseCleaner.h
index de1c319ac4584..f5b3724bca0e5 100644
--- a/HLTrigger/JetMET/interface/HLTHcalMETNoiseCleaner.h
+++ b/HLTrigger/JetMET/interface/HLTHcalMETNoiseCleaner.h
@@ -59,7 +59,7 @@ class HLTHcalMETNoiseCleaner : public edm::EDFilter {
 
   // helper function to compare noise data energies
   struct noisedatacomp {
-    inline bool operator() ( const CommonHcalNoiseRBXData& t1, const CommonHcalNoiseRBXData& t2) {
+    inline bool operator() ( const CommonHcalNoiseRBXData& t1, const CommonHcalNoiseRBXData& t2) const{
       return t1.energy()>t2.energy();
     }
   };
diff --git a/HLTrigger/JetMET/interface/HLTHcalMETNoiseFilter.h b/HLTrigger/JetMET/interface/HLTHcalMETNoiseFilter.h
index 65d45b78f1fe0..ed0ca3799be0e 100644
--- a/HLTrigger/JetMET/interface/HLTHcalMETNoiseFilter.h
+++ b/HLTrigger/JetMET/interface/HLTHcalMETNoiseFilter.h
@@ -56,7 +56,7 @@ class HLTHcalMETNoiseFilter : public edm::EDFilter {
     
   // helper function to compare noise data energies
   struct noisedatacomp {
-    inline bool operator() ( const CommonHcalNoiseRBXData& t1, const CommonHcalNoiseRBXData& t2) {
+    inline bool operator() ( const CommonHcalNoiseRBXData& t1, const CommonHcalNoiseRBXData& t2) const{
       return t1.energy()>t2.energy();
     }
   };
diff --git a/HLTrigger/JetMET/interface/HLTHcalTowerNoiseCleaner.h b/HLTrigger/JetMET/interface/HLTHcalTowerNoiseCleaner.h
index 870023eb47a10..89b6eea2e935b 100644
--- a/HLTrigger/JetMET/interface/HLTHcalTowerNoiseCleaner.h
+++ b/HLTrigger/JetMET/interface/HLTHcalTowerNoiseCleaner.h
@@ -58,7 +58,7 @@ class HLTHcalTowerNoiseCleaner : public edm::stream::EDProducer<> {
 
   // helper function to compare noise data energies
   struct noisedatacomp {
-    inline bool operator() ( const CommonHcalNoiseRBXData& t1, const CommonHcalNoiseRBXData& t2) {
+    inline bool operator() ( const CommonHcalNoiseRBXData& t1, const CommonHcalNoiseRBXData& t2) const{
       return t1.energy()>t2.energy();
     }
   };
diff --git a/HLTrigger/JetMET/interface/HLTHcalTowerNoiseCleanerWithrechit.h b/HLTrigger/JetMET/interface/HLTHcalTowerNoiseCleanerWithrechit.h
index 297ebbaab5bc1..ac1770c15ce0b 100644
--- a/HLTrigger/JetMET/interface/HLTHcalTowerNoiseCleanerWithrechit.h
+++ b/HLTrigger/JetMET/interface/HLTHcalTowerNoiseCleanerWithrechit.h
@@ -61,7 +61,7 @@ class HLTHcalTowerNoiseCleanerWithrechit : public edm::stream::EDProducer<> {
 
   // helper function to compare noise data energies
   struct noisedatacomp {
-    inline bool operator() ( const CommonHcalNoiseRBXData& t1, const CommonHcalNoiseRBXData& t2) {
+    inline bool operator() ( const CommonHcalNoiseRBXData& t1, const CommonHcalNoiseRBXData& t2) const{
       return t1.energy()>t2.energy();
     }
   };