diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMManager.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMManager.java
index db0f876e1f4..9613e9381b3 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMManager.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMManager.java
@@ -65,6 +65,7 @@ import org.eclipse.cdt.internal.core.pdom.indexer.DeltaAnalyzer;
 import org.eclipse.cdt.internal.core.pdom.indexer.IndexerPreferences;
 import org.eclipse.cdt.internal.core.pdom.indexer.PDOMRebuildTask;
 import org.eclipse.cdt.internal.core.pdom.indexer.PDOMUpdateTask;
+import org.eclipse.cdt.internal.core.pdom.indexer.TriggerNotificationTask;
 import org.eclipse.cdt.internal.core.pdom.indexer.nulli.PDOMNullIndexer;
 import org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager;
 import org.eclipse.core.resources.IFolder;
@@ -504,6 +505,9 @@ public class PDOMManager implements IWritableIndexManager, IListener {
 					if (task != null) {
 						enqueue(task);
 					}
+					else {
+						enqueue(new TriggerNotificationTask(this, pdom));
+					}
 					return;
 				}
 			}
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/TriggerNotificationTask.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/TriggerNotificationTask.java
new file mode 100644
index 00000000000..d7b7d9eb101
--- /dev/null
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/TriggerNotificationTask.java
@@ -0,0 +1,41 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * 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:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+package org.eclipse.cdt.internal.core.pdom.indexer;
+
+import org.eclipse.cdt.core.dom.IPDOMIndexer;
+import org.eclipse.cdt.core.dom.IPDOMIndexerTask;
+import org.eclipse.cdt.internal.core.pdom.IndexerProgress;
+import org.eclipse.cdt.internal.core.pdom.PDOMManager;
+import org.eclipse.cdt.internal.core.pdom.WritablePDOM;
+import org.eclipse.core.runtime.IProgressMonitor;
+
+public class TriggerNotificationTask implements IPDOMIndexerTask {
+
+	private WritablePDOM fPDOM;
+	private PDOMManager fManager;
+
+	public TriggerNotificationTask(PDOMManager manager, WritablePDOM pdom) {
+		fManager= manager;
+		fPDOM= pdom;
+	}
+
+	public IPDOMIndexer getIndexer() {
+		return null;
+	}
+
+	public IndexerProgress getProgressInformation() {
+		return new IndexerProgress();
+	}
+
+	public void run(IProgressMonitor monitor) {
+		fManager.handleChange(fPDOM);
+	}
+}