diff --git a/panda/src/physics/baseForce.h b/panda/src/physics/baseForce.h
index 15fee20b71..3cf2f46c46 100644
--- a/panda/src/physics/baseForce.h
+++ b/panda/src/physics/baseForce.h
@@ -30,7 +30,7 @@ protected:
   BaseForce(bool active = true);
   BaseForce(const BaseForce &copy);
 
-public:
+PUBLISHED:
   virtual ~BaseForce(void);
 
   INLINE bool get_active(void) const;