diff --git a/DRAMSys/simulator/src/controller/core/Slots.cpp b/DRAMSys/simulator/src/controller/core/Slots.cpp
index 4bc524e0..87909571 100644
--- a/DRAMSys/simulator/src/controller/core/Slots.cpp
+++ b/DRAMSys/simulator/src/controller/core/Slots.cpp
@@ -81,10 +81,8 @@ void Slots::blockSlots(sc_time begin, sc_time end, bool excludeBorders)
 		end -= clk;
 	}
 
-	for (sc_time time = begin; time <= end; time += clk)
-	{
-		slotSet.insert(time);
+	for (sc_time time = begin; time <= end; time += clk) {
+		blockSlot(time);
 	}
-
 }
 
diff --git a/DRAMSys/simulator/src/controller/core/Slots.h b/DRAMSys/simulator/src/controller/core/Slots.h
index 0f4bbed3..49b03b5b 100644
--- a/DRAMSys/simulator/src/controller/core/Slots.h
+++ b/DRAMSys/simulator/src/controller/core/Slots.h
@@ -46,15 +46,16 @@ class Slots
 public:
     Slots(sc_time clk);
     virtual ~Slots();
+
     void moveCommandToNextFreeSlot(ScheduledCommand& command);
     void cleanUpSlots(sc_time time);
-    void blockSlots(sc_time begin, sc_time end, bool excludeBorders);
     void blockSlot(sc_time time);
     bool isFree(sc_time);
-    std::set<sc_time> slotSet;
 
 private:
     sc_time clk;
+    std::set<sc_time> slotSet;
+    void blockSlots(sc_time begin, sc_time end, bool excludeBorders);
 
 };