diff --git a/DRAMSys/simulator/src/controller/scheduler/SMS.h b/DRAMSys/simulator/src/controller/scheduler/SMS.h
index 7989bd08..00fe6877 100644
--- a/DRAMSys/simulator/src/controller/scheduler/SMS.h
+++ b/DRAMSys/simulator/src/controller/scheduler/SMS.h
@@ -25,6 +25,7 @@ public:
       {
         memrequestcounter.emplace(Thread(threadID), 0);
         memoryIntensity.emplace(Thread(threadID), 0);
+        inFlightMemRequestCounter.emplace(Thread(threadID), 0);
       }
       SC_THREAD(batchScheduler);
     }