diff --git a/src/DebugSystem.cs b/src/DebugSystem.cs
index b4836cd..6db9882 100644
--- a/src/DebugSystem.cs
+++ b/src/DebugSystem.cs
@@ -1,5 +1,7 @@
 // NOTE: these methods are very inefficient
 // this class should only be used in debugging contexts!!
+
+#if DEBUG
 namespace MoonTools.ECS
 {
 	public abstract class DebugSystem : System
@@ -24,3 +26,4 @@ namespace MoonTools.ECS
 		}
 	}
 }
+#endif