diff --git a/arch/arm/src/armv7-a/arm_cpuidlestack.c b/arch/arm/src/armv7-a/arm_cpuidlestack.c
index 7059e806eb9..1acdeae7177 100644
--- a/arch/arm/src/armv7-a/arm_cpuidlestack.c
+++ b/arch/arm/src/armv7-a/arm_cpuidlestack.c
@@ -135,7 +135,7 @@ int up_cpu_idlestack(int cpu, FAR struct tcb_s *tcb, size_t stack_size)
 
   stack_alloc          = (uintptr_t)g_cpu_stackalloc[cpu];
   DEBUGASSERT(stack_alloc != 0 && STACK_ISALIGNED(stack_alloc));
-  top_of_stack         = stack_alloc + SMP_STACK_TOP;
+  top_of_stack         = stack_alloc + SMP_STACK_SIZE;
 
   tcb->adj_stack_size  = SMP_STACK_SIZE;
   tcb->stack_alloc_ptr = (FAR uint32_t *)stack_alloc;
diff --git a/arch/arm/src/armv7-a/smp.h b/arch/arm/src/armv7-a/smp.h
index a94170c7646..e168ce68055 100644
--- a/arch/arm/src/armv7-a/smp.h
+++ b/arch/arm/src/armv7-a/smp.h
@@ -58,7 +58,6 @@
 #define SMP_STACK_MASK       7
 #define SMP_STACK_SIZE       ((CONFIG_SMP_IDLETHREAD_STACKSIZE + 7) & ~7)
 #define SMP_STACK_WORDS      (SMP_STACK_SIZE >> 2)
-#define SMP_STACK_TOP        (SMP_STACK_SIZE - 8)
 
 /****************************************************************************
  * Public Data