diff --git a/Eigen/src/SparseCore/TriangularSolver.h b/Eigen/src/SparseCore/TriangularSolver.h
index ccfbdc762..fd1a55bc6 100644
--- a/Eigen/src/SparseCore/TriangularSolver.h
+++ b/Eigen/src/SparseCore/TriangularSolver.h
@@ -28,7 +28,6 @@ template<typename Lhs, typename Rhs, int Mode>
 struct sparse_solve_triangular_selector<Lhs,Rhs,Mode,Lower,RowMajor>
 {
   typedef typename Rhs::Scalar Scalar;
-  typedef typename Lhs::StorageIndex StorageIndex;
   typedef typename evaluator<Lhs>::type LhsEval;
   typedef typename evaluator<Lhs>::InnerIterator LhsIterator;
   static void run(const Lhs& lhs, Rhs& other)
@@ -66,7 +65,6 @@ template<typename Lhs, typename Rhs, int Mode>
 struct sparse_solve_triangular_selector<Lhs,Rhs,Mode,Upper,RowMajor>
 {
   typedef typename Rhs::Scalar Scalar;
-  typedef typename Lhs::StorageIndex StorageIndex;
   typedef typename evaluator<Lhs>::type LhsEval;
   typedef typename evaluator<Lhs>::InnerIterator LhsIterator;
   static void run(const Lhs& lhs, Rhs& other)
@@ -106,7 +104,6 @@ template<typename Lhs, typename Rhs, int Mode>
 struct sparse_solve_triangular_selector<Lhs,Rhs,Mode,Lower,ColMajor>
 {
   typedef typename Rhs::Scalar Scalar;
-  typedef typename Lhs::StorageIndex StorageIndex;
   typedef typename evaluator<Lhs>::type LhsEval;
   typedef typename evaluator<Lhs>::InnerIterator LhsIterator;
   static void run(const Lhs& lhs, Rhs& other)
@@ -142,7 +139,6 @@ template<typename Lhs, typename Rhs, int Mode>
 struct sparse_solve_triangular_selector<Lhs,Rhs,Mode,Upper,ColMajor>
 {
   typedef typename Rhs::Scalar Scalar;
-  typedef typename Lhs::StorageIndex StorageIndex;
   typedef typename evaluator<Lhs>::type LhsEval;
   typedef typename evaluator<Lhs>::InnerIterator LhsIterator;
   static void run(const Lhs& lhs, Rhs& other)