diff --git a/src/NTwain/Data/BufferedData.cs b/src/NTwain/Data/BufferedData.cs
index 12fd072..d10ac99 100644
--- a/src/NTwain/Data/BufferedData.cs
+++ b/src/NTwain/Data/BufferedData.cs
@@ -77,7 +77,7 @@ public class BufferedData : IDisposable
 
     public void Dispose()
     {
-        if (_fromPool && _disposed)
+        if (_fromPool && !_disposed)
         {
             MemPool.Return(_buffer);
             _disposed = true;