diff --git a/core/org.eclipse.cdt.core/META-INF/MANIFEST.MF b/core/org.eclipse.cdt.core/META-INF/MANIFEST.MF
index 65128f5a622..e7c50208488 100644
--- a/core/org.eclipse.cdt.core/META-INF/MANIFEST.MF
+++ b/core/org.eclipse.cdt.core/META-INF/MANIFEST.MF
@@ -55,6 +55,7 @@ Export-Package: org.eclipse.cdt.core,
  org.eclipse.cdt.internal.core.envvar;x-friends:="org.eclipse.cdt.ui",
  org.eclipse.cdt.internal.core.index;x-friends:="org.eclipse.cdt.ui",
  org.eclipse.cdt.internal.core.index.provider;x-internal:=true,
+ org.eclipse.cdt.internal.core.indexer;x-internal:=true,
  org.eclipse.cdt.internal.core.language;x-friends:="org.eclipse.cdt.ui",
  org.eclipse.cdt.internal.core.model;x-friends:="org.eclipse.cdt.ui,org.eclipse.cdt.debug.core,org.eclipse.cdt.debug.ui",
  org.eclipse.cdt.internal.core.model.ext;x-friends:="org.eclipse.cdt.ui",