diff --git a/core/src/trezor/wire/thp/__init__.py b/core/src/trezor/wire/thp/__init__.py
index 523c92114..9538dc0af 100644
--- a/core/src/trezor/wire/thp/__init__.py
+++ b/core/src/trezor/wire/thp/__init__.py
@@ -8,15 +8,14 @@ else:
 
 class ChannelState(IntEnum):
     UNALLOCATED = 0
-    UNAUTHENTICATED = 1
-    TH1 = 2
-    TH2 = 3
-    TP1 = 4
-    TP2 = 5
-    TP3 = 6
-    TP4 = 7
-    TP5 = 8
-    ENCRYPTED_TRANSPORT = 9
+    TH1 = 1
+    TH2 = 2
+    TP1 = 3
+    TP2 = 4
+    TP3 = 5
+    TP4 = 6
+    TP5 = 7
+    ENCRYPTED_TRANSPORT = 8
 
 
 class SessionState(IntEnum):
diff --git a/core/src/trezor/wire/thp/channel.py b/core/src/trezor/wire/thp/channel.py
index a56185bea..be618418f 100644
--- a/core/src/trezor/wire/thp/channel.py
+++ b/core/src/trezor/wire/thp/channel.py
@@ -597,8 +597,6 @@ def _state_to_str(state: int) -> str:
         return "state: tp5"
     elif state == ChannelState.UNALLOCATED:
         return "state: unallocated"
-    elif state == ChannelState.UNAUTHENTICATED:
-        return "state: unauthenticated"
     else:
         return "state: <not implemented>"