1 files changed, 5 insertions, 1 deletions
diff --git a/src/account.h b/src/account.h
index 8d0fb1db..7fae93e1 100644
--- a/src/account.h
+++ b/src/account.h
@@ -261,7 +261,11 @@ public:
   mutable optional<xdata_t> xdata_;
 
   bool has_xdata() const {
-    return xdata_ != boost::none;
+#if BOOST_VERSION >= 105600
+    return xdata_ != NULL;
+#else
+    return xdata_;
+#endif
   }
   void clear_xdata();
   xdata_t& xdata() {