diff --git a/Eigen/src/Array/ArrayWrapper.h b/Eigen/src/Array/ArrayWrapper.h
index 0075dd537..4ac240899 100644
--- a/Eigen/src/Array/ArrayWrapper.h
+++ b/Eigen/src/Array/ArrayWrapper.h
@@ -188,7 +188,7 @@ class MatrixWrapper : public MatrixBase<MatrixWrapper<ExpressionType> >
     }
 
   protected:
-    const NestedExpressionType& m_expression;
+    const NestedExpressionType m_expression;
 };
 
 #endif // EIGEN_ARRAYWRAPPER_H