diff --git a/src/inbound_messages.rs b/src/inbound_messages.rs
index ad3efbf..28cb6cf 100644
--- a/src/inbound_messages.rs
+++ b/src/inbound_messages.rs
@@ -520,7 +520,7 @@ impl Deserializable for InMsg {
             MSG_DISCARD_TR => read_msg_descr!(cell, InMsgDiscardedTransit, DiscardedTransit),
             #[cfg(feature = "ton")]
             0b00000001 => {
-                let subtag = cell.get_next_bits(2)?[0];
+                let subtag = (cell.get_next_bits(2)?[0] & 0b11000000) >> 6;
                 match subtag {
                     0b00 => read_msg_descr!(cell, InMsgDeferredFinal, DeferredFinal),
                     0b01 => read_msg_descr!(cell, InMsgDeferredTransit, DeferredTransit),