diff --git a/arch/x86/include/asm/syscalls.h b/arch/x86/include/asm/syscalls.h
index 87803da44010..3a5252c4b8d6 100644
--- a/arch/x86/include/asm/syscalls.h
+++ b/arch/x86/include/asm/syscalls.h
@@ -33,7 +33,7 @@ asmlinkage int sys_sigaction(int, const struct old_sigaction __user *,
 			     struct old_sigaction __user *);
 asmlinkage int sys_sigaltstack(unsigned long);
 asmlinkage unsigned long sys_sigreturn(unsigned long);
-asmlinkage int sys_rt_sigreturn(unsigned long);
+asmlinkage int sys_rt_sigreturn(struct pt_regs);
 
 /* kernel/ioport.c */
 asmlinkage long sys_iopl(unsigned long);
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index b1f4d34e0a38..b1cc6da64208 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -642,11 +642,9 @@ static long do_rt_sigreturn(struct pt_regs *regs)
 }
 
 #ifdef CONFIG_X86_32
-asmlinkage int sys_rt_sigreturn(unsigned long __unused)
+asmlinkage int sys_rt_sigreturn(struct pt_regs regs)
 {
-	struct pt_regs *regs = (struct pt_regs *)&__unused;
-
-	return do_rt_sigreturn(regs);
+	return do_rt_sigreturn(&regs);
 }
 #else /* !CONFIG_X86_32 */
 asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)