diff --git a/x11-toolkits/mygui/files/patch-MyGUIEngine_include_MyGUI__UString.h b/x11-toolkits/mygui/files/patch-MyGUIEngine_include_MyGUI__UString.h
new file mode 100644
index 000000000000..cb5275188b1f
--- /dev/null
+++ b/x11-toolkits/mygui/files/patch-MyGUIEngine_include_MyGUI__UString.h
@@ -0,0 +1,15 @@
+--- MyGUIEngine/include/MyGUI_UString.h.orig	2023-05-09 09:46:12 UTC
++++ MyGUIEngine/include/MyGUI_UString.h
+@@ -164,10 +164,10 @@ namespace MyGUI
+ 		static const size_type npos = static_cast<size_type>(~0);
+ 
+ 		//! a single 32-bit Unicode character
+-		using unicode_char = uint32;
++		using unicode_char = char32_t;
+ 
+ 		//! a single UTF-16 code point
+-		using code_point = uint16;
++		using code_point = char16_t;
+ 
+ 		//! value type typedef for use in iterators
+ 		using value_type = code_point;