diff --git a/internal/ceres/visibility_based_preconditioner.h b/internal/ceres/visibility_based_preconditioner.h
index c58b1a7..70cea83 100644
--- a/internal/ceres/visibility_based_preconditioner.h
+++ b/internal/ceres/visibility_based_preconditioner.h
@@ -55,6 +55,7 @@
 #include "ceres/graph.h"
 #include "ceres/internal/macros.h"
 #include "ceres/internal/scoped_ptr.h"
+#include "ceres/linear_solver.h"
 #include "ceres/preconditioner.h"
 #include "ceres/suitesparse.h"
 
@@ -147,7 +148,7 @@
   void ComputeClusterTridiagonalSparsity(const CompressedRowBlockStructure& bs);
   void InitStorage(const CompressedRowBlockStructure& bs);
   void InitEliminator(const CompressedRowBlockStructure& bs);
-  bool Factorize();
+  LinearSolverTerminationType Factorize();
   void ScaleOffDiagonalCells();
 
   void ClusterCameras(const vector< set<int> >& visibility);