diff --git a/include/JSystem/JSupport/JSUOutputStream.h b/include/JSystem/JSupport/JSUOutputStream.h
index 81c8f9d24d..570ed1e9db 100644
--- a/include/JSystem/JSupport/JSUOutputStream.h
+++ b/include/JSystem/JSupport/JSUOutputStream.h
@@ -18,7 +18,7 @@ public:
     s32 write(const void*, s32);
 	void write(const char*);
 
-#ifdef _MSVC_LANG
+#if defined(_MSVC_LANG) && defined(_WIN64)
     JSUOutputStream& operator<<(uintptr_t param_0) {
         write(&param_0, sizeof(uintptr_t));
         return *this;