diff --git a/src/eressea/lua/ship.cpp b/src/eressea/lua/ship.cpp
index e55b10af4..763ac1c56 100644
--- a/src/eressea/lua/ship.cpp
+++ b/src/eressea/lua/ship.cpp
@@ -9,6 +9,9 @@
 #include <lua.hpp>
 #include <luabind/luabind.hpp>
 #include <luabind/iterator_policy.hpp>
+#ifdef HAVE_LUABIND_B7
+# include <luabind/operator.hpp>
+#endif
 
 #include <util/base36.h>