diff --git a/core/src/trezor/wire/thp_session.py b/core/src/trezor/wire/thp_session.py
index c192c2531..db253f757 100644
--- a/core/src/trezor/wire/thp_session.py
+++ b/core/src/trezor/wire/thp_session.py
@@ -85,7 +85,7 @@ def sync_set_can_send_message(session: SessionThpCache, can_send: bool) -> None:
 
 
 def sync_set_receive_expected_bit(session: SessionThpCache, bit: int) -> None:
-    if bit != 0 and bit != 1:
+    if bit not in (0, 1):
         raise ThpError("Unexpected receive sync bit")
 
     # set second bit to "bit" value
@@ -126,7 +126,7 @@ def _get_unauthenticated_session_or_none(session_id) -> SessionThpCache | None:
 
 
 def _sync_set_send_bit(session: SessionThpCache, bit: int) -> None:
-    if bit != 0 and bit != 1:
+    if bit not in (0, 1):
         raise ThpError("Unexpected send sync bit")
 
     # set third bit to "bit" value
diff --git a/core/src/trezor/wire/thp_v1.py b/core/src/trezor/wire/thp_v1.py
index facc1e8e9..c053c6a00 100644
--- a/core/src/trezor/wire/thp_v1.py
+++ b/core/src/trezor/wire/thp_v1.py
@@ -285,7 +285,8 @@ async def _write_report(write, iface: WireInterface, report: bytearray) -> None:
 async def _handle_broadcast(iface: WireInterface, ctrl_byte, report) -> Message | None:
     if ctrl_byte != _CHANNEL_ALLOCATION_REQ:
         raise ThpError("Unexpected ctrl_byte in broadcast channel packet")
-    length, nonce, checksum = ustruct.unpack(">H8s4s", report[3:])
+    nonce, checksum = ustruct.unpack(">8s4s", report[5:])
+    # Note that the length field of the channel allocation request is ignored.
 
     if not _is_checksum_valid(checksum, data=report[:-4]):
         raise ThpError("Checksum is not valid")