diff --git a/arch/powerpc/kernel/signal.h b/arch/powerpc/kernel/signal.h
index 7c59d88b9d8636cdd6f94d4137cd2db8632dfd4b..a6467f843acffd4f7eb084f86426023add0dc903 100644
--- a/arch/powerpc/kernel/signal.h
+++ b/arch/powerpc/kernel/signal.h
@@ -49,6 +49,11 @@ extern int handle_rt_signal64(struct ksignal *ksig, sigset_t *set,
 
 #else /* CONFIG_PPC64 */
 
+extern long sys_rt_sigreturn(int r3, int r4, int r5, int r6, int r7, int r8,
+		     struct pt_regs *regs);
+extern long sys_sigreturn(int r3, int r4, int r5, int r6, int r7, int r8,
+		       struct pt_regs *regs);
+
 static inline int handle_rt_signal64(struct ksignal *ksig, sigset_t *set,
 				     struct task_struct *tsk)
 {