diff --git a/pdu/pdu_test.go b/pdu/pdu_test.go
index bea4f09..2f05e53 100644
--- a/pdu/pdu_test.go
+++ b/pdu/pdu_test.go
@@ -292,7 +292,6 @@ func TestEncodeIntoWithBoundaryValues(t *testing.T) {
 	}
 }
 
-
 // region decode
 func TestDecodeHandlesShortByteSlice(t *testing.T) {
 	var p PDU_HEADER
@@ -463,7 +462,26 @@ func BenchmarkEncode(b *testing.B) {
 	}
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
-		p.Encode()
+		buf, _ := p.Encode()
+		ByteBufferPool.Put(buf)
+	}
+}
+
+// These two are effectively the same but there is difference in execution time
+// I wonder why...
+// I should stop writing benchmarks...
+func BenchmarkEncodeWithBufferPool(b *testing.B) {
+	p := &PDU_HEADER{
+		command_length:  16,
+		command_id:      1,
+		command_status:  0,
+		sequence_number: 12345,
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		buf := ByteBufferPool.Get(uint(p.Size()))
+		p.EncodeInto(buf)
+		ByteBufferPool.Put(buf)
 	}
 }
 
@@ -489,4 +507,4 @@ func BenchmarkDecode(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		p.Decode(data)
 	}
-}
\ No newline at end of file
+}