1 files changed, 5 insertions, 1 deletions
diff --git a/src/item.h b/src/item.h
index 2c349bdc..ba812175 100644
--- a/src/item.h
+++ b/src/item.h
@@ -174,7 +174,11 @@ public:
   static bool use_aux_date;
 
   virtual bool has_date() const {
-    return _date != boost::none;
+#if BOOST_VERSION >= 105600
+    return _date != NULL;
+#else
+    return _date;
+#endif
   }
 
   virtual date_t date() const {