diff --git a/unsupported/Eigen/src/MatrixFunctions/MatrixSquareRoot.h b/unsupported/Eigen/src/MatrixFunctions/MatrixSquareRoot.h
index e654a94f6..4f5f5c22b 100644
--- a/unsupported/Eigen/src/MatrixFunctions/MatrixSquareRoot.h
+++ b/unsupported/Eigen/src/MatrixFunctions/MatrixSquareRoot.h
@@ -76,11 +76,15 @@ private:
   
   void computeDiagonalPartOfSqrt(MatrixType& sqrtT, const MatrixType& T);
   void computeOffDiagonalPartOfSqrt(MatrixType& sqrtT, const MatrixType& T);
-  void compute2x2diagonalBlock(MatrixType& sqrtT, const MatrixType& T, Index i);
-  void compute1x1offDiagonalBlock(MatrixType& sqrtT, const MatrixType& T, Index i, Index j);
-  void compute1x2offDiagonalBlock(MatrixType& sqrtT, const MatrixType& T, Index i, Index j);
-  void compute2x1offDiagonalBlock(MatrixType& sqrtT, const MatrixType& T, Index i, Index j);
-  void compute2x2offDiagonalBlock(MatrixType& sqrtT, const MatrixType& T, Index i, Index j);
+  void compute2x2diagonalBlock(MatrixType& sqrtT, const MatrixType& T, typename MatrixType::Index i);
+  void compute1x1offDiagonalBlock(MatrixType& sqrtT, const MatrixType& T, 
+				  typename MatrixType::Index i, typename MatrixType::Index j);
+  void compute1x2offDiagonalBlock(MatrixType& sqrtT, const MatrixType& T, 
+				  typename MatrixType::Index i, typename MatrixType::Index j);
+  void compute2x1offDiagonalBlock(MatrixType& sqrtT, const MatrixType& T, 
+				  typename MatrixType::Index i, typename MatrixType::Index j);
+  void compute2x2offDiagonalBlock(MatrixType& sqrtT, const MatrixType& T, 
+				  typename MatrixType::Index i, typename MatrixType::Index j);
 
   template <typename SmallMatrixType>
   static void solveAuxiliaryEquation(SmallMatrixType& X, const SmallMatrixType& A,