diff --git a/DBC.cs b/DBC.cs
index 7105eb4..d73fee3 100644
--- a/DBC.cs
+++ b/DBC.cs
@@ -1,5 +1,7 @@
 using System;
+#if PROFILER || !DEBUG
 using System.Diagnostics;
+#endif
 
 namespace DBC.ECS
 {