diff --git a/src/Simulator/RedstoneSimulator.cpp b/src/Simulator/RedstoneSimulator.cpp
index 771be6ac1..63e4f04a8 100644
--- a/src/Simulator/RedstoneSimulator.cpp
+++ b/src/Simulator/RedstoneSimulator.cpp
@@ -627,14 +627,14 @@ void cRedstoneSimulator::HandleRedstoneLamp(int a_BlockX, int a_BlockY, int a_Bl
 	{
 		if (AreCoordsPowered(a_BlockX, a_BlockY, a_BlockZ))
 		{
-			m_World.FastSetBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_LAMP_ON, 0);
+			m_World.SetBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_LAMP_ON, 0);
 		}
 	}
 	else
 	{
 		if (!AreCoordsPowered(a_BlockX, a_BlockY, a_BlockZ))
 		{
-			m_World.FastSetBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_LAMP_OFF, 0);
+			m_World.SetBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_LAMP_OFF, 0);
 		}
 	}
 }
@@ -649,7 +649,7 @@ void cRedstoneSimulator::HandleTNT(int a_BlockX, int a_BlockY, int a_BlockZ)
 	{
 		m_World.BroadcastSoundEffect("random.fuse", a_BlockX * 8, a_BlockY * 8, a_BlockZ * 8, 0.5f, 0.6f);
 		m_World.SpawnPrimedTNT(a_BlockX + 0.5, a_BlockY + 0.5, a_BlockZ + 0.5, 4);  // 4 seconds to boom
-		m_World.FastSetBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_AIR, 0);
+		m_World.SetBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_AIR, 0);
 	}
 }