diff --git a/common/source/java/ch/systemsx/cisd/common/shared/basic/IOptionalStackTraceLoggingException.java b/common/source/java/ch/systemsx/cisd/common/shared/basic/IOptionalStackTraceLoggingException.java
new file mode 100644
index 0000000000000000000000000000000000000000..ea2ac8ccdaffc90f813cda52f808cd4c0b4b2d65
--- /dev/null
+++ b/common/source/java/ch/systemsx/cisd/common/shared/basic/IOptionalStackTraceLoggingException.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2011 ETH Zuerich, CISD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package ch.systemsx.cisd.common.shared.basic;
+
+/**
+ * Marker inteface for exceptions whose stack trace can be omitted in logs.
+ * 
+ * @author Kaloyan Enimanev
+ */
+public interface IOptionalStackTraceLoggingException
+{
+}
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/exception/InvalidSessionException.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/exception/InvalidSessionException.java
index 1c4b7d98d0068843ae6938b93094a018c712d8e9..c5021f4e32334520585b7997dd7b26b7f589f641 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/exception/InvalidSessionException.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/exception/InvalidSessionException.java
@@ -16,13 +16,15 @@
 
 package ch.systemsx.cisd.openbis.generic.client.web.client.exception;
 
+import ch.systemsx.cisd.common.shared.basic.IOptionalStackTraceLoggingException;
+
 /**
- * This <code>UserFailureException</code> extension signals that a <code>Session</code> has
- * expired.
+ * This <code>UserFailureException</code> extension signals that a <code>Session</code> has expired.
  * 
  * @author Christian Ribeaud
  */
-public final class InvalidSessionException extends UserFailureException
+public final class InvalidSessionException extends UserFailureException implements
+        IOptionalStackTraceLoggingException
 {
     private static final long serialVersionUID = 1L;