diff --git a/src/utility.h b/src/utility.h
index 3260d51b..34eb366d 100644
--- a/src/utility.h
+++ b/src/utility.h
@@ -687,7 +687,9 @@ namespace util {
   public:
     using element_type = T;
     using pointer = element_type *;
+    using const_pointer = element_type const *;
     using reference = element_type &;
+    using const_reference = element_type const &;
 
     wrap_ptr():
         _own_ptr { false }, _p { nullptr } {}
@@ -744,7 +746,7 @@ namespace util {
       _own_ptr = false;
     }
 
-    const reference
+    const_reference
     operator*() const {
       return *_p;
     }
@@ -752,7 +754,7 @@ namespace util {
     operator*() {
       return *_p;
     }
-    const pointer
+    const_pointer
     operator->() const {
       return _p;
     }