diff --git a/DRAMSys/library/src/controller/checker/CheckerHBM3.cpp b/DRAMSys/library/src/controller/checker/CheckerHBM3.cpp
index 9ff9a0c7..ce95d7b1 100644
--- a/DRAMSys/library/src/controller/checker/CheckerHBM3.cpp
+++ b/DRAMSys/library/src/controller/checker/CheckerHBM3.cpp
@@ -90,7 +90,7 @@ sc_time CheckerHBM3::timeToSatisfyConstraints(Command command, const tlm_generic
         if (lastCommandStart != sc_max_time())
             earliestTimeToStart = std::max(earliestTimeToStart, lastCommandStart + tWRPRE);
 
-        lastCommandStart = lastScheduledByCommandAndBank[Command::PREPB][bank.ID()];
+        lastCommandStart = lastScheduledByCommandAndRank[Command::PREPB][bank.ID()];
         if (lastCommandStart != sc_max_time())
             earliestTimeToStart = std::max(earliestTimeToStart, lastCommandStart + memSpec->tPPD);