diff --git a/src/badguy/owl.hpp b/src/badguy/owl.hpp
index ae441b092f3..b880bf280bf 100644
--- a/src/badguy/owl.hpp
+++ b/src/badguy/owl.hpp
@@ -37,6 +37,10 @@ class Owl : public BadGuy
 
   std::string carried_obj_name;
   Portable *carried_object;
+
+private:
+  Owl(const Owl&);
+  Owl& operator=(const Owl&);
 };
 
 #endif /* HEADER_SUPERTUX_BADGUY_OWL_HPP */