diff --git a/Include/auROXTL/AU_MACROS.hpp b/Include/auROXTL/AU_MACROS.hpp
index 2a68330..a8b06c9 100644
--- a/Include/auROXTL/AU_MACROS.hpp
+++ b/Include/auROXTL/AU_MACROS.hpp
@@ -266,6 +266,10 @@ struct AuStringOwnedException : AuStringException
     #define AuSharedPointerFromThis(pPtr) (AuSPtr<AuRemoveReference_t<decltype(*pPtr)>>(AuSharedFromThis(), pPtr)) 
 #endif
 
+#if !defined(AuSharedPointerFromShared)
+    #define AuSharedPointerFromShared(pPtr, pParentShared) (AuSPtr<AuRemoveReference_t<decltype(*pPtr)>>(pParentShared, pPtr)) 
+#endif
+
 
 #define AU_EMIT_FIRST_COMMA_FIRST(n)n
 #define AU_EMIT_FIRST_COMMA_OTHERS(n),n