diff --git a/kernel/src/fs.rs b/kernel/src/fs.rs
index 2e59317..f4f44fa 100644
--- a/kernel/src/fs.rs
+++ b/kernel/src/fs.rs
@@ -28,7 +28,7 @@ global_asm!(r#"
     .global _user_img_start
     .global _user_img_end
 _user_img_start:
-    .incbin "../user/user-aarch64.img"
+    .incbin "../user/img/ucore-aarch64.img"
 _user_img_end:
 "#);
 
diff --git a/tools/riscv-pk/dummy_payload/dummy_payload.ac b/tools/riscv-pk/dummy_payload/dummy_payload.ac
deleted file mode 100644
index e69de29..0000000
diff --git a/tools/riscv-pk/dummy_payload/dummy_payload.c b/tools/riscv-pk/dummy_payload/dummy_payload.c
deleted file mode 100644
index e69de29..0000000
diff --git a/tools/riscv-pk/util/util.ac b/tools/riscv-pk/util/util.ac
deleted file mode 100644
index e69de29..0000000
diff --git a/user/user-aarch64.img b/user/img/ucore-aarch64.img
similarity index 100%
rename from user/user-aarch64.img
rename to user/img/ucore-aarch64.img