diff --git a/src/Parquet/File/PackedColumn.cs b/src/Parquet/File/PackedColumn.cs
index c86952c5..d3866ba3 100644
--- a/src/Parquet/File/PackedColumn.cs
+++ b/src/Parquet/File/PackedColumn.cs
@@ -14,7 +14,7 @@ namespace Parquet.File {
     /// </summary>
     class PackedColumn : IDisposable {
 
-        private static readonly ArrayPool<int> IntPool = ArrayPool<int>.Shared;
+        private readonly ArrayPool<int> IntPool = ArrayPool<int>.Shared;
 
         // fields declared in write order