diff --git a/src/classes/PRunBase.cpp b/src/classes/PRunBase.cpp
index 3b51cb10c..a3f2d4678 100644
--- a/src/classes/PRunBase.cpp
+++ b/src/classes/PRunBase.cpp
@@ -177,7 +177,16 @@ void PRunBase::DeadTimeCorrection(std::vector<PDoubleVector> &histos, PUIntVecto
     return;
   }
 
-  if (!runData->DeadTimeCorrectionReady()) {
+  bool checkDeadTime{false};
+  PMsrRunList *rl = fMsrInfo->GetMsrRunList();
+  for (unsigned int i=0; i<rl->size(); i++) {
+    if (!rl->at(i).GetFileFormat()->CompareTo("nexus", TString::kIgnoreCase)) {
+      checkDeadTime = true;
+      break;
+    }
+  }
+
+  if (!runData->DeadTimeCorrectionReady() && checkDeadTime) {
     std::cerr << std::endl << "**WARNING** PRunBase::DeadTimeCorrection: missing input for dead time correction" << std::endl;
     return;
   }