diff --git a/bundles/org.eclipse.team.ui/src/org/eclipse/team/ui/mapping/ITeamContentProviderDescriptor.java b/bundles/org.eclipse.team.ui/src/org/eclipse/team/ui/mapping/ITeamContentProviderDescriptor.java
index d2a178f..2870f77 100644
--- a/bundles/org.eclipse.team.ui/src/org/eclipse/team/ui/mapping/ITeamContentProviderDescriptor.java
+++ b/bundles/org.eclipse.team.ui/src/org/eclipse/team/ui/mapping/ITeamContentProviderDescriptor.java
@@ -18,6 +18,9 @@
  * A description of a single extension registered with the 
  * <code>org.eclipse.team.ui.teamContentProviders</code>
  * extension point.
+ * 
+ *  * <p>
+ * This interface is not intended to be implemented by clients.
  * @since 3.2
  */
 public interface ITeamContentProviderDescriptor {
diff --git a/bundles/org.eclipse.team.ui/src/org/eclipse/team/ui/mapping/ITeamContentProviderManager.java b/bundles/org.eclipse.team.ui/src/org/eclipse/team/ui/mapping/ITeamContentProviderManager.java
index f2ee589..1358256 100644
--- a/bundles/org.eclipse.team.ui/src/org/eclipse/team/ui/mapping/ITeamContentProviderManager.java
+++ b/bundles/org.eclipse.team.ui/src/org/eclipse/team/ui/mapping/ITeamContentProviderManager.java
@@ -24,6 +24,8 @@
  * extension point. A team content provider defines a mapping between
  * a {@link ModelProvider} and a content extension registered with
  * the <code>org.eclipse.ui.navigator.navigatorContent</code> extension point.
+ * <p>
+ * This interface is not intended to be implemented by clients.
  * 
  * @see TeamUI#getTeamContentProviderManager()
  * @see ModelProvider