diff --git a/os/src/entry.asm b/os/src/entry.asm
index a28dc8ff..c32d68fd 100644
--- a/os/src/entry.asm
+++ b/os/src/entry.asm
@@ -5,8 +5,8 @@ _start:
     call rust_main
 
     .section .bss.stack
-    .globl boot_stack
-boot_stack:
+    .globl boot_stack_lower_bound
+boot_stack_lower_bound:
     .space 4096 * 16
     .globl boot_stack_top
 boot_stack_top: