diff --git a/src/mlpack/methods/hoeffding_trees/hoeffding_tree_impl.hpp b/src/mlpack/methods/hoeffding_trees/hoeffding_tree_impl.hpp
index 342416e986..3c5195fc65 100644
--- a/src/mlpack/methods/hoeffding_trees/hoeffding_tree_impl.hpp
+++ b/src/mlpack/methods/hoeffding_trees/hoeffding_tree_impl.hpp
@@ -506,8 +506,8 @@ template<
     typename FitnessFunction,
     template<typename> class NumericSplitType,
     template<typename> class CategoricalSplitType
->
-size_t mlpack::tree::HoeffdingTree<
+>   
+size_t HoeffdingTree<
     FitnessFunction,
     NumericSplitType, 
     CategoricalSplitType