diff --git a/ParticleSimulation/Simulation/ParticleSimulation.cs b/ParticleSimulation/Simulation/ParticleSimulation.cs
index a2b498d..c59e81c 100644
--- a/ParticleSimulation/Simulation/ParticleSimulation.cs
+++ b/ParticleSimulation/Simulation/ParticleSimulation.cs
@@ -1,4 +1,4 @@
-//#define MULTITHREADED
+#define MULTITHREADED
 
 using System.Collections.Generic;
 using System.Linq;