diff --git a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/dom/CDOM.java b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/dom/CDOM.java
index ccfa8b553a0..de52791e5c5 100644
--- a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/dom/CDOM.java
+++ b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/dom/CDOM.java
@@ -28,7 +28,10 @@ import org.eclipse.core.resources.IStorage;
  * 
  * @noextend This class is not intended to be subclassed by clients.
  * @noinstantiate This class is not intended to be instantiated by clients.
+ * @deprecated This class does not take into account language mappings.  Use
+ * org.eclipse.cdt.core.model.ILanguage instead.
  */
+@Deprecated
 public class CDOM implements IASTServiceProvider {
     
     /**