1 files changed, 4 insertions, 0 deletions
diff --git a/src/account.h b/src/account.h
index d1377c39..7411dfc2 100644
--- a/src/account.h
+++ b/src/account.h
@@ -261,7 +261,11 @@ public:
   mutable optional<xdata_t> xdata_;
 
   bool has_xdata() const {
+#if BOOST_VERSION >= 105600
+    return xdata_ != NULL;
+#else
     return xdata_;
+#endif
   }
   void clear_xdata();
   xdata_t& xdata() {