1 files changed, 1 insertions, 1 deletions

diff --git a/src/MoonP/ast.hpp b/src/MoonP/ast.hpp
index d576395..104202d 100644
--- a/src/MoonP/ast.hpp
+++ b/src/MoonP/ast.hpp
@@ -97,7 +97,7 @@ public:
         virtual int getId() const = 0;
 
         template<class T>
-        inline ast_ptr<false, T> new_ptr() {
+        inline ast_ptr<false, T> new_ptr() const {
                 auto item = new T;
                 item->m_begin.m_line = m_begin.m_line;
                 item->m_end.m_line = m_begin.m_line;