diff --git a/DRAMSys/library/src/controller/checker/CheckerHBM2.cpp b/DRAMSys/library/src/controller/checker/CheckerHBM2.cpp
index a5551dfd..07b04842 100644
--- a/DRAMSys/library/src/controller/checker/CheckerHBM2.cpp
+++ b/DRAMSys/library/src/controller/checker/CheckerHBM2.cpp
@@ -81,7 +81,7 @@ sc_time CheckerHBM2::timeToSatisfyConstraints(Command command, const tlm_generic
     if (command == Command::RD || command == Command::RDA)
     {
         unsigned burstLength = DramExtension::getBurstLength(payload);
-        assert(!(memSpec->ranksPerChannel == 1) || (burstLength == 2)); // Legacy mode
+        assert(!(memSpec->ranksPerChannel == 1) || (burstLength == 2 || burstLength == 4)); // Legacy mode
         assert(!(memSpec->ranksPerChannel == 2) || (burstLength == 4)); // Pseudo-channel mode
 
         lastCommandStart = lastScheduledByCommandAndBank[Command::ACT][bank.ID()];