diff --git a/xpra/client/mixins/encodings.py b/xpra/client/mixins/encodings.py
index e4f9568990..3343f23b87 100644
--- a/xpra/client/mixins/encodings.py
+++ b/xpra/client/mixins/encodings.py
@@ -143,7 +143,7 @@ def init_authenticated_packet_handlers(self) -> None:
 
     def _process_encodings(self, packet: PacketType) -> None:
         caps = typedict(packet[1])
-        Encodings._parse_server_capabilities(caps)
+        Encodings._parse_server_capabilities(self, caps)
 
     def get_info(self) -> dict[str, Any]:
         return {