diff --git a/src/openrct2/world/Location.hpp b/src/openrct2/world/Location.hpp
index 3e21c8d61b..ae9df02b6a 100644
--- a/src/openrct2/world/Location.hpp
+++ b/src/openrct2/world/Location.hpp
@@ -169,7 +169,7 @@ typedef uint8_t Direction;
     return dir ^ 2;
 }
 
-constexpr bool direction_valid(Direction dir)
+[[maybe_unused]] static constexpr bool direction_valid(Direction dir)
 {
     return dir < 4;
 }