1 files changed, 1 insertions, 1 deletions
diff --git a/objXSUB.h b/objXSUB.h
index 1e70169fd0..76b2e73081 100644
--- a/objXSUB.h
+++ b/objXSUB.h
@@ -885,7 +885,7 @@
 #define Perl_my_atof		pPerl->Perl_my_atof
 #undef  my_atof
 #define my_atof			Perl_my_atof
-#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
+#if (!defined(HAS_MEMCPY) && !defined(HAS_BCOPY)) || (!defined(HAS_MEMMOVE) && !defined(HAS_SAFE_MEMCPY) && !defined(HAS_SAFE_BCOPY))
 #undef  Perl_my_bcopy
 #define Perl_my_bcopy		pPerl->Perl_my_bcopy
 #undef  my_bcopy