diff --git a/CODE/login/MAKEFILE b/CODE/login/MAKEFILE
index c28860d..c800638 100644
--- a/CODE/login/MAKEFILE
+++ b/CODE/login/MAKEFILE
@@ -18,7 +18,8 @@ all: $(OUT)
 # 构建后用 patch_login_hash.ps1 计算 .text SHA256 并写入 .hashseg
 $(OUT): $(OBJECTS) linker.ld
 	@mkdir -p "$(ROOT)/SYSTEM/system/user/use"
-	$(LD) $(LDFLAGS) -o $@ $(OBJECTS)
+	$(LD) $(LDFLAGS) -o $@.tmp $(OBJECTS)
+	@cmd /c "move /y $(OUT:.elf=.elf).tmp $(OUT)" >nul
 	@echo [login] patching .text SHA256 into .hashseg...
 	powershell -NoProfile -ExecutionPolicy Bypass -File $(PATCHER) $@
 %.o: %.c