diff --git a/OpenMcdf/Sector.cs b/OpenMcdf/Sector.cs
index 364a522..6145207 100644
--- a/OpenMcdf/Sector.cs
+++ b/OpenMcdf/Sector.cs
@@ -11,12 +11,6 @@ internal record struct Sector(uint Id, int Length)
 {
     public static readonly Sector EndOfChain = new(SectorType.EndOfChain, 0);
 
-    /// <summary>
-    /// Compound File Binary File Format only specifies that ENDOFCHAIN ends the DIFAT chain
-    /// but some implementations use FREESECT
-    /// </summary>
-    public readonly bool IsEndOfChain => Id is SectorType.EndOfChain or SectorType.Free;
-
     public readonly bool IsValid => Id <= SectorType.Maximum;
 
     /// <summary>