diff --git a/Eigen/src/Core/util/XprHelper.h b/Eigen/src/Core/util/XprHelper.h
index eceb5ab2a..a09475e20 100644
--- a/Eigen/src/Core/util/XprHelper.h
+++ b/Eigen/src/Core/util/XprHelper.h
@@ -214,7 +214,7 @@ struct ei_is_reference<T&>
 };
 
 /**
-* The reference selector for template expressions. The idea is that we don't
+* \internal The reference selector for template expressions. The idea is that we don't
 * need to use references for expressions since they are light weight proxy
 * objects which should generate no copying overhead.
 **/
diff --git a/Eigen/src/LU/PartialPivLU.h b/Eigen/src/LU/PartialPivLU.h
index a60596668..df36cb04d 100644
--- a/Eigen/src/LU/PartialPivLU.h
+++ b/Eigen/src/LU/PartialPivLU.h
@@ -196,7 +196,7 @@ PartialPivLU<MatrixType>::PartialPivLU(const MatrixType& matrix)
   compute(matrix);
 }
 
-/** This is the blocked version of ei_fullpivlu_unblocked() */
+/** \internal This is the blocked version of ei_fullpivlu_unblocked() */
 template<typename Scalar, int StorageOrder>
 struct ei_partial_lu_impl
 {