diff --git a/public/dt_send.h b/public/dt_send.h
index 88f88fb9..77d7efe8 100644
--- a/public/dt_send.h
+++ b/public/dt_send.h
@@ -266,6 +266,7 @@ public:
 	const char		*m_pVarName;
 	float			m_fHighLowMul;
 	
+	int				m_Unknown1;
 private:
 
 	int					m_Flags;				// SPROP_ flags.