diff --git a/src/openrct2/localisation/Localisation.h b/src/openrct2/localisation/Localisation.h
index 7ec140d222..70eb7adb48 100644
--- a/src/openrct2/localisation/Localisation.h
+++ b/src/openrct2/localisation/Localisation.h
@@ -84,7 +84,7 @@ extern const rct_string_id DateDayNames[31];
 extern const rct_string_id DateGameMonthNames[MONTH_COUNT];
 extern const rct_string_id DateGameShortMonthNames[MONTH_COUNT];
 
-static inline void set_format_arg_body(uint8 *args, size_t offset, uintptr_t value, size_t size)
+[[maybe_unused]] static inline void set_format_arg_body(uint8 *args, size_t offset, uintptr_t value, size_t size)
 {
     memcpy(args + offset, &value, size);
 }