--- IO-AIO/AIO.xs	2018/07/17 23:20:09	1.257
+++ IO-AIO/AIO.xs	2018/07/18 00:57:55	1.258
@@ -6,6 +6,10 @@
 #include "perl.h"
 #include "XSUB.h"
 
+#if !defined mg_findext
+# define mg_findext(sv,type,vtbl) mg_find (sv, type)
+#endif
+
 #include <stddef.h>
 #include <stdlib.h>
 #include <errno.h>