diff --git a/StgSharp.Common/HighPerformance/Memory/HLSFAllocator.SegmentEntry.cs b/StgSharp.Common/HighPerformance/Memory/HLSFAllocator.SegmentEntry.cs
index 86b278bb..c816515a 100644
--- a/StgSharp.Common/HighPerformance/Memory/HLSFAllocator.SegmentEntry.cs
+++ b/StgSharp.Common/HighPerformance/Memory/HLSFAllocator.SegmentEntry.cs
@@ -25,13 +25,8 @@
 //     
 // -----------------------------------------------------------------------
 // -----------------------------------------------------------------------
-using System;
-using System.Linq.Expressions;
-using System.Reflection.PortableExecutable;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
-using System.Runtime.Serialization;
-using System.Threading;
 
 namespace StgSharp.HighPerformance.Memory
 {