diff --git a/src/openrct2/world/park.c b/src/openrct2/world/park.c
index 3014140272..261cee7b1c 100644
--- a/src/openrct2/world/park.c
+++ b/src/openrct2/world/park.c
@@ -991,6 +991,7 @@ static money32 map_buy_land_rights_for_tile(sint32 x, sint32 y, sint32 setting,
     default:
         log_warning("Tried calling map_buy_land_rights_for_tile() with an incorrect setting!");
         assert(false);
+        return MONEY32_UNDEFINED;
     }
 }