diff --git a/simple_message_channels/smc.py b/simple_message_channels/smc.py
index 0f1e4bb..f02cf6d 100644
--- a/simple_message_channels/smc.py
+++ b/simple_message_channels/smc.py
@@ -128,4 +128,7 @@ class SimpleMessageChannel:
                 raise RuntimeError("Incoming message too large")
         else:
             self.state = 0
+            self.messages.append(
+                (self.header >> 4, self.header & 0b1111, self.message)
+            )
             self.message = b""