diff --git a/arch/armv7/syscall.cc b/arch/armv7/syscall.cc
index 10ec5e56bf77a08c4d748f565b349609ca609b5c..b4dce21be86244434f1a37954e509d6de90cf520 100644
--- a/arch/armv7/syscall.cc
+++ b/arch/armv7/syscall.cc
@@ -4,9 +4,6 @@
 #include "machine.h"
 #include "os/util/redundant.h"
 
-
-extern "C" uint32_t **__initial_sp;
-
 namespace arch {
 
     typedef void (*FUNPTR)(void *, void *);