diff --git a/sjrpc/core/rpcconnection.py b/sjrpc/core/rpcconnection.py
index 04d056517e46c1837477ca8659a6eaff6936fea8..efcdb84597f627d1083de23f83c2bb885b1f17a9 100644
--- a/sjrpc/core/rpcconnection.py
+++ b/sjrpc/core/rpcconnection.py
@@ -184,7 +184,7 @@ class RpcConnection(object):
         - capabilities: {'version': REMOTE_VERSION, 'capabilities': []}
         '''
         from sjrpc import __version__
-        cap = {'version': __version__, 'capabilities':['rpc', 'tunnel']}
+        cap = {'version': __version__, 'capabilities': ['rpc', 'tunnel']}
         rpc0 = self.get_protocol(0)
         rpc0.send_special('capabilities', capabilities=cap)