1 files changed, 4 insertions, 1 deletions
diff --git a/unsupported/Eigen/src/NonLinearOptimization/LevenbergMarquardt.h b/unsupported/Eigen/src/NonLinearOptimization/LevenbergMarquardt.h
index 0ae681b1c..2fc50fb93 100644
--- a/unsupported/Eigen/src/NonLinearOptimization/LevenbergMarquardt.h
+++ b/unsupported/Eigen/src/NonLinearOptimization/LevenbergMarquardt.h
@@ -28,6 +28,7 @@
 #ifndef EIGEN_LEVENBERGMARQUARDT__H
 #define EIGEN_LEVENBERGMARQUARDT__H
 
+namespace Eigen { 
 
 namespace LevenbergMarquardtSpace {
     enum Status {
@@ -651,6 +652,8 @@ LevenbergMarquardt<FunctorType,Scalar>::lmdif1(
     return info;
 }
 
-//vim: ai ts=4 sts=4 et sw=4
+} // end namespace Eigen
+
 #endif // EIGEN_LEVENBERGMARQUARDT__H
 
+//vim: ai ts=4 sts=4 et sw=4