--- a/src/3rdparty/masm/yarr/YarrCanonicalize.h
+++ b/src/3rdparty/masm/yarr/YarrCanonicalize.h
@@ -26,7 +26,7 @@
 #pragma once
 
 #include <stdint.h>
-#include <unicode/utypes.h>
+typedef int32_t UChar32;
 
 namespace JSC { namespace Yarr {
 
