diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 6dcd37256979052082913122c83aed3d04292423..ed9746340363b628dbad84ede8ca4c099ba904fe 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -536,7 +536,7 @@ ia32_ptregs_common:
 	CFI_ENDPROC
 	CFI_STARTPROC32	simple
 	CFI_SIGNAL_FRAME
-	CFI_DEF_CFA	rsp,SS+8
+	CFI_DEF_CFA	rsp,SIZEOF_PTREGS
 	CFI_REL_OFFSET	rax,RAX
 	CFI_REL_OFFSET	rcx,RCX
 	CFI_REL_OFFSET	rdx,RDX