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diff --git a/bundles/org.simantics.db/src/org/simantics/db/exception/NoHistoryException.java b/bundles/org.simantics.db/src/org/simantics/db/exception/NoHistoryException.java
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index 000000000..9e5ee0f35
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+++ b/bundles/org.simantics.db/src/org/simantics/db/exception/NoHistoryException.java
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+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.db.exception;
+
+import org.simantics.db.service.UndoRedoSupport;
+
+/**
+ * An exception thrown by {@link UndoRedoSupport} to indicate the lack of
+ * history for performing undo or redo operations. This is mainly an
+ * informational exception, indicating an operation could not be performed. For
+ * this reason the exception should be presented to clients in a discreet
+ * manner.
+ */
+public class NoHistoryException extends ServiceException {
+
+    private static final long serialVersionUID = 4224735839986999952L;
+
+    public NoHistoryException() {
+        super("");
+    }
+
+    public NoHistoryException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public NoHistoryException(String message) {
+        super(message);
+    }
+
+    public NoHistoryException(Throwable cause) {
+        super(cause);
+    }
+
+}