diff --git a/test/cctest/test-platform.cc b/test/cctest/test-platform.cc
index 48eda3d..a0fbc21 100644
--- a/test/cctest/test-platform.cc
+++ b/test/cctest/test-platform.cc
@@ -17,7 +17,7 @@
 #elif V8_HOST_ARCH_IA32
   __asm__ __volatile__("mov %%esp, %0" : "=g"(sp_addr));
 #elif V8_HOST_ARCH_ARM
-  __asm__ __volatile__("str %%sp, %0" : "=g"(sp_addr));
+  __asm__ __volatile__("str sp, %0" : "=g"(sp_addr));
 #elif V8_HOST_ARCH_ARM64
   __asm__ __volatile__("mov x16, sp; str x16, %0" : "=g"(sp_addr));
 #elif V8_HOST_ARCH_MIPS