diff --git a/comms/flwrap/files/patch-src_include_base64.h b/comms/flwrap/files/patch-src_include_base64.h
new file mode 100644
index 000000000000..5e088c997517
--- /dev/null
+++ b/comms/flwrap/files/patch-src_include_base64.h
@@ -0,0 +1,16 @@
+- fix the error: ./include/base64.h:24:2: error: reference to 'byte' is ambiguous
+- the alternative 'byte' definition is std::byte
+
+--- src/include/base64.h.orig	2023-07-16 16:44:53 UTC
++++ src/include/base64.h
+@@ -21,8 +21,8 @@ class base64 { (private)
+ 	size_t iolen;
+ 	size_t iocp;
+ 	bool ateof;
+-	byte dtable[256];
+-	byte etable[256];
++	::byte dtable[256];
++	::byte etable[256];
+ 	int linelength;
+ 	bool crlf;
+ 	void init();