diff --git a/DQM/EcalMonitorTasks/interface/LedTask.h b/DQM/EcalMonitorTasks/interface/LedTask.h
index 07bd08db229bb..5e1a88f12f0cd 100644
--- a/DQM/EcalMonitorTasks/interface/LedTask.h
+++ b/DQM/EcalMonitorTasks/interface/LedTask.h
@@ -31,6 +31,7 @@ namespace ecaldqm {
     void runOnPnDigis(EcalPnDiodeDigiCollection const&);
     void runOnUncalibRecHits(EcalUncalibratedRecHitCollection const&);
 
+    void endLuminosityBlock(edm::LuminosityBlock const&, edm::EventSetup const&) override;
   private:
     void setParams(edm::ParameterSet const&);
 
@@ -43,6 +44,7 @@ namespace ecaldqm {
 
     int emptyLS_;
     int emptyLSLimit_;
+    int isemptyLS; 
   };
 
   inline bool LedTask::analyze(void const* _p, Collections _collection){
diff --git a/DQM/EcalMonitorTasks/src/LedTask.cc b/DQM/EcalMonitorTasks/src/LedTask.cc
index 069e9fcd5c33d..54ed40e6577a2 100644
--- a/DQM/EcalMonitorTasks/src/LedTask.cc
+++ b/DQM/EcalMonitorTasks/src/LedTask.cc
@@ -74,7 +74,8 @@ namespace ecaldqm {
   void
   LedTask::beginLuminosityBlock(edm::LuminosityBlock const&, edm::EventSetup const&)
   {
-    if(++emptyLS_ > emptyLSLimit_) emptyLS_ = -1;
+    isemptyLS = 0;
+    if(emptyLS_+1 > emptyLSLimit_) emptyLS_ = -1;
   }
 
   void
@@ -186,6 +187,9 @@ namespace ecaldqm {
       meSignalRate.fill((index <= kEEmHigh ? index : index + nEBDCC) + 1, enable_[index] ? 1 : 0);
     }
 
+    if(!enable && isemptyLS >= 0) isemptyLS = 1;
+    else if(enable) isemptyLS = -1;
+
     if(enable) emptyLS_ = 0;
     else if(ledOnExpected) return;
 
@@ -311,6 +315,11 @@ namespace ecaldqm {
     }
   }
 
+  void
+  LedTask::endLuminosityBlock(edm::LuminosityBlock const&, edm::EventSetup const&){
+    if(isemptyLS == 1)emptyLS_ += 1;
+  }
+
   DEFINE_ECALDQM_WORKER(LedTask);
 }