diff --git a/DRAMSys/simulator/src/controller/core/scheduling/checker/PowerDownChecker.cpp b/DRAMSys/simulator/src/controller/core/scheduling/checker/PowerDownChecker.cpp
index 85f3a867..be552d22 100644
--- a/DRAMSys/simulator/src/controller/core/scheduling/checker/PowerDownChecker.cpp
+++ b/DRAMSys/simulator/src/controller/core/scheduling/checker/PowerDownChecker.cpp
@@ -55,6 +55,8 @@ sc_time PowerDownChecker::getTimeConstraintToEnterPowerDown(Command lastCmd, Com
 		constraint = config.memSpec.tXP;
 	} else if (lastCmd == Command::SREFX) {
 		constraint = config.memSpec.tXSR;
+    } else if(lastCmd == Command::Precharge || lastCmd == Command::PrechargeAll) {
+        constraint = config.memSpec.tRP;
 	} else {
 		reportFatal("Powerdown checker", commandToString(pdnCmd) + " can not follow " + commandToString(lastCmd));
 	}