diff --git a/Project.toml b/Project.toml
index 97aa823..f1bde28 100644
--- a/Project.toml
+++ b/Project.toml
@@ -4,7 +4,6 @@ authors = ["Sebastijan Dumancic <s.dumancic@tudelft.nl>", "Jaap de Jong <J.deJon
 version = "0.3.1"
 
 [deps]
-Combinatorics = "861a8166-3701-5b0c-9a16-15d98fcdc6aa"
 DataStructures = "864edb3b-99cc-5e75-8d2d-829cb0a9cfe8"
 HerbConstraints = "1fa96474-3206-4513-b4fa-23913f296dfc"
 HerbCore = "2b23ba43-8213-43cb-b5ea-38c12b45bd45"
diff --git a/src/HerbSearch.jl b/src/HerbSearch.jl
index 86ea4e3..b339f73 100644
--- a/src/HerbSearch.jl
+++ b/src/HerbSearch.jl
@@ -1,7 +1,6 @@
 module HerbSearch
 
 using DataStructures
-using Combinatorics
 
 using HerbCore
 using HerbGrammar
diff --git a/src/bottom_up_iterators/bottom_up_depth_iterator.jl b/src/bottom_up_iterators/bottom_up_depth_iterator.jl
index 61ba6f9..5f86d5a 100644
--- a/src/bottom_up_iterators/bottom_up_depth_iterator.jl
+++ b/src/bottom_up_iterators/bottom_up_depth_iterator.jl
@@ -1,8 +1,8 @@
-"""
+Base.@doc """
     @programiterator BUDepthIterator(problem::Problem{Vector{IOExample}}) <: BottomUpIterator
 
 Implementation of the `BottomUpIterator`. Iterates through complete programs in increasing order of their depth.
-"""
+""" BUDepthIterator
 @programiterator BUDepthIterator(problem::Problem{Vector{IOExample}}) <: BottomUpIterator
 
 """