diff --git a/src/core/model/matrix-array.h b/src/core/model/matrix-array.h
index 2dbf6a9c9..c2dca2456 100644
--- a/src/core/model/matrix-array.h
+++ b/src/core/model/matrix-array.h
@@ -247,7 +247,7 @@ class MatrixArray : public ValArray<T>
                                                   EnableBool)>::type>
     MatrixArray<T> HermitianTranspose() const;
 
-  private:
+  protected:
     // To simplify functions in MatrixArray that are using members from the template base class
     using ValArray<T>::m_numRows;
     using ValArray<T>::m_numCols;