diff --git a/common/source/java/ch/systemsx/cisd/common/serviceconversation/client/ClientMessenger.java b/common/source/java/ch/systemsx/cisd/common/serviceconversation/client/ClientMessenger.java
index 250da484235066f7a649f8bccb566532d1fddf87..2d24702ce407348e371a92f992d9a90574923d70 100644
--- a/common/source/java/ch/systemsx/cisd/common/serviceconversation/client/ClientMessenger.java
+++ b/common/source/java/ch/systemsx/cisd/common/serviceconversation/client/ClientMessenger.java
@@ -155,7 +155,7 @@ class ClientMessenger implements IServiceConversation
         ServiceMessage message = responseMessageQueue.poll(timeout);
         while (message != null && message.getProgress() != null)
         {
-            operationLog.info(message.getProgress());
+            operationLog.debug(message.getProgress());
             message = responseMessageQueue.poll(timeout);
         }
         return message;