diff --git a/spinnman/transceiver.py b/spinnman/transceiver.py
index 6e9726500..8dff62113 100644
--- a/spinnman/transceiver.py
+++ b/spinnman/transceiver.py
@@ -433,7 +433,7 @@ def send_sdp_message(
         else:
             connection.send_sdp_message(message)
 
-    def __add_scamp_connection(self, conn: SDPConnection):
+    def __add_scamp_connection(self, conn: SCAMPConnection):
         """
         Stores the scamp connection making a connection to chip 0, 0 is first.