diff --git a/msgtx.go b/msgtx.go
index 91f4c127..0e5b1d1b 100644
--- a/msgtx.go
+++ b/msgtx.go
@@ -300,7 +300,7 @@ func (msg *MsgTx) Command() string {
 // MaxPayloadLength returns the maximum length the payload can be for the
 // receiver.  This is part of the Message interface implementation.
 func (msg *MsgTx) MaxPayloadLength(pver uint32) uint32 {
-	return maxMessagePayload
+	return MaxBlockPayload
 }
 
 // NewMsgTx returns a new bitcoin tx message that conforms to the Message
diff --git a/msgtx_test.go b/msgtx_test.go
index 85a511ed..9f003dc1 100644
--- a/msgtx_test.go
+++ b/msgtx_test.go
@@ -34,7 +34,7 @@ func TestTx(t *testing.T) {
 
 	// Ensure max payload is expected value for latest protocol version.
 	// Num addresses (varInt) + max allowed addresses.
-	wantPayload := uint32(1024 * 1024 * 32)
+	wantPayload := uint32(1000 * 1000)
 	maxPayload := msg.MaxPayloadLength(pver)
 	if maxPayload != wantPayload {
 		t.Errorf("MaxPayloadLength: wrong max payload length for "+