diff --git a/include/lzo/lzodefs.h b/include/lzo/lzodefs.h
index f4ae948..b44021d 100644
--- a/include/lzo/lzodefs.h
+++ b/include/lzo/lzodefs.h
@@ -1686,6 +1686,10 @@ extern "C" {
 #  define __lzo_byte_struct_ma(s,n)     struct s { unsigned char a[n]; } __lzo_may_alias __attribute__((__packed__));
 #endif
 #endif
+#if (LZO_CC_GNUC >= 0x060000ul) && defined(__lzo_byte_struct_ma)
+#  undef __lzo_byte_struct
+#  define __lzo_byte_struct(s,n)        __lzo_byte_struct_ma(s,n)
+#endif
 #if defined(__lzo_byte_struct) &&  !defined(__lzo_byte_struct_ma)
 #  define __lzo_byte_struct_ma(s,n)     __lzo_byte_struct(s,n)
 #endif