--- a/flist.c
+++ b/flist.c
@@ -2352,7 +2352,7 @@ struct file_list *recv_file_list(int f)
 		if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
 			flags |= read_byte(f) << 8;
 
-		if (flags == (XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST)) {
+		if (flags == (XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST) && protocol_version >= 30) {
 			int err;
 			if (!use_safe_inc_flist) {
 				rprintf(FERROR, "Invalid flist flag: %x\n", flags);