diff --git a/common/include/valptridx.h b/common/include/valptridx.h
index e484135b4..b92faaa72 100644
--- a/common/include/valptridx.h
+++ b/common/include/valptridx.h
@@ -135,6 +135,12 @@ protected:
 		return {A, o, i};	\
 	}	\
 	\
+	static inline name operator-(P Pconst *o, decltype(A) &O)	\
+	{	\
+		return N(o, o - (&*O.begin()));	\
+	}	\
+	\
+	name operator-(name, decltype(A) &) = delete;	\
 
 #define DEFINE_VALPTRIDX_SUBTYPE(N,P,I,A)	\
 	_DEFINE_VALPTRIDX_SUBTYPE_USERTYPE(N,P,I,A,N##_t,);	\
diff --git a/common/main/object.h b/common/main/object.h
index 530ddcd4a..fb5014d76 100644
--- a/common/main/object.h
+++ b/common/main/object.h
@@ -625,13 +625,6 @@ struct object_array_t : public array<object, MAX_OBJECTS>
 extern object_array_t Objects;
 
 DEFINE_VALPTRIDX_SUBTYPE(objptridx, object, int16_t, Objects);
-
-static inline objptridx_t operator-(object *o, object_array_t &O)
-{
-	return objptridx(o, o - (&*O.begin()));
-}
-
-objptridx_t operator-(objptridx_t, object_array_t &) DXX_CXX11_EXPLICIT_DELETE;
 #endif
 
 /*