diff --git a/notebook/services/kernels/handlers.py b/notebook/services/kernels/handlers.py
index 9b751adb9..df079c5c9 100644
--- a/notebook/services/kernels/handlers.py
+++ b/notebook/services/kernels/handlers.py
@@ -187,7 +187,7 @@ class ZMQChannelsHandler(AuthenticatedZMQStreamHandler):
         protocol_version = info.get('protocol_version', client_protocol_version)
         if protocol_version != client_protocol_version:
             self.session.adapt_version = int(protocol_version.split('.')[0])
-            self.log.info("Adapting to protocol v%s for kernel %s", protocol_version, self.kernel_id)
+            self.log.info("Adapting to protocol v%s for kernel %s (client expecting %s)", protocol_version, self.kernel_id, client_protocol_version)
         if not self._kernel_info_future.done():
             self._kernel_info_future.set_result(info)