diff --git a/src/Shared/Buffers.MemoryPool/DiagnosticPoolBlock.cs b/src/Shared/Buffers.MemoryPool/DiagnosticPoolBlock.cs
index d2c0dfd18917..d1720128416e 100644
--- a/src/Shared/Buffers.MemoryPool/DiagnosticPoolBlock.cs
+++ b/src/Shared/Buffers.MemoryPool/DiagnosticPoolBlock.cs
@@ -138,7 +138,7 @@ public override MemoryHandle Pin(int byteOffset = 0)
                     MemoryPoolThrowHelper.ThrowInvalidOperationException_BlockIsBackedByDisposedSlab(this);
                 }
 
-                if (byteOffset < 0 || byteOffset > _memory.Length)
+                if ((uint)byteOffset >= (uint)_memory.Length)
                 {
                     MemoryPoolThrowHelper.ThrowArgumentOutOfRangeException(_memory.Length, byteOffset);
                 }