diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/AbstractAsyncCallback.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/AbstractAsyncCallback.java
index 2aad55f7d6a52df75cfa51546a33c6e7064c3a86..355aa03c677113928c4df57f2277728c12454313 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/AbstractAsyncCallback.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/AbstractAsyncCallback.java
@@ -78,7 +78,6 @@ public abstract class AbstractAsyncCallback<T> implements AsyncCallback<T>
     public void onFailure(Throwable caught)
     {
         callbackListener.onFailureOf(getThis(), caught);
-        System.out.println(caught);
         final String msg;
         if (caught instanceof InvocationException)
         {
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/SessionContextCallback.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/SessionContextCallback.java
index da5175d660d7d6c4ab3bc17a9b74f6c5d2a78812..624ebccf7a97c259fa741fe23da7189624b8dc6a 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/SessionContextCallback.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/SessionContextCallback.java
@@ -39,7 +39,6 @@ public final class SessionContextCallback extends AbstractAsyncCallback<SessionC
     @Override
     public void process(SessionContext sessionContext)
     {
-        System.out.println("SessionContextCallback.process() "+sessionContext);
         RootPanel rootPanel = RootPanel.get();
         rootPanel.clear();
         Component widget;