diff --git a/tools/xmakescripts/rules/build_rules.lua b/tools/xmakescripts/rules/build_rules.lua
index 6583ed556..c13d6b1bd 100644
--- a/tools/xmakescripts/rules/build_rules.lua
+++ b/tools/xmakescripts/rules/build_rules.lua
@@ -15,6 +15,12 @@ local TARGET_TYPES = {
             "WITH_CASE_PRESERVING_NAME",
             table.unpack(gameDefines)
         }
+    },
+    ["LessEqual421"] = {
+        ["defines"] = {
+            "FNAME_ALIGN8",
+            table.unpack(gameDefines)
+        }
     }
 }