diff --git a/arch/x86_64/kernel/signal.c b/arch/x86_64/kernel/signal.c
index 94b4b1128ac8..28161170fb0a 100644
--- a/arch/x86_64/kernel/signal.c
+++ b/arch/x86_64/kernel/signal.c
@@ -237,7 +237,6 @@ get_stack(struct k_sigaction *ka, struct pt_regs *regs, unsigned long size)
 	rsp = regs->rsp - 128;
 
 	/* This is the X/Open sanctioned signal stack switching.  */
-	/* RED-PEN: redzone on that stack? */
 	if (ka->sa.sa_flags & SA_ONSTACK) {
 		if (sas_ss_flags(rsp) == 0)
 			rsp = current->sas_ss_sp + current->sas_ss_size;