diff --git a/org.eclipse.xtext.ui/src/org/eclipse/xtext/ui/editor/model/XtextDocument.java b/org.eclipse.xtext.ui/src/org/eclipse/xtext/ui/editor/model/XtextDocument.java
index 312b83b85c6..98556b09633 100755
--- a/org.eclipse.xtext.ui/src/org/eclipse/xtext/ui/editor/model/XtextDocument.java
+++ b/org.eclipse.xtext.ui/src/org/eclipse/xtext/ui/editor/model/XtextDocument.java
@@ -563,6 +563,9 @@ protected <T> T internalReadOnly(IUnitOfWork<T, XtextResource> work, boolean isC
 		 *       changing while they run. To achieve this, we run the {@link IXtextModelListener}s on the UI thread.
 		 */
 		private void notifyModelListenersOnUiThread() {
+			if(modelListeners.isEmpty()) {
+				return;
+			}
 			Display display = PlatformUI.getWorkbench().getDisplay();
 			if (Thread.currentThread() == display.getThread()) {
 				// We are already running on the display thread.  Run the listeners immediately.