X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Flisp%2Flist_iterator.hpp;h=bb9fe03667547b947b7512ebdb672e776140bb26;hb=2ad3ecbc14b77d373c796ad04d6389489666cc01;hp=092b6728bafe24b7f6a5ff289e5df6cf95d93917;hpb=a113d3bd1feddd510e3b2852b0d42522735eee40;p=supertux.git

diff --git a/src/lisp/list_iterator.hpp b/src/lisp/list_iterator.hpp
index 092b6728b..bb9fe0366 100644
--- a/src/lisp/list_iterator.hpp
+++ b/src/lisp/list_iterator.hpp
@@ -20,7 +20,9 @@
 #ifndef __LISP_ITERATOR_H__
 #define __LISP_ITERATOR_H__
 
-#include "lisp/lisp.hpp"
+#include <string>
+
+#include "lisp.hpp"
 
 namespace lisp
 {
@@ -36,15 +38,15 @@ public:
 
   const std::string& item() const
   { return current_item; }
-  lisp::Lisp* lisp() const
+  const lisp::Lisp* lisp() const
   { return current_lisp; }
-  lisp::Lisp* value() const
+  const lisp::Lisp* value() const
   { return current_lisp->get_car(); }
   bool next();
 
 private:
   std::string current_item;
-  lisp::Lisp* current_lisp;
+  const lisp::Lisp* current_lisp;
   const lisp::Lisp* cur;
 };