diff --git a/server/gameserver/human.h b/server/gameserver/human.h
index d5cdb7df..a1c14433 100644
--- a/server/gameserver/human.h
+++ b/server/gameserver/human.h
@@ -412,6 +412,7 @@ protected:
     bool leave_ = false;
     long long leave_frameno_ = 0;
     int oxygen_ = 0;
+    long long last_sync_gas_frameno = 0;
 
     std::array<int, IS_END> volume_ = {};
     Human* follow_target_ = nullptr;
@@ -425,7 +426,6 @@ protected:
 private:
     FrameData framedata_;
     std::set<Human*> observers_;
-    long long last_sync_gas_frameno = 0;
     std::map<int, int> items_;
     std::set<int> battling_items_;
     size_t normal_drop_times_ = 0;