diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c
index f3428e5e86fb9fd25c2148d5c37c5fb390ea2a39..18130c3748f3e4a46c6632c93e6c5b449abd19aa 100644
--- a/arch/parisc/kernel/ptrace.c
+++ b/arch/parisc/kernel/ptrace.c
@@ -78,7 +78,7 @@ void ptrace_disable(struct task_struct *child)
 	pa_psw(child)->l = 0;
 }
 
-long sys_ptrace(long request, pid_t pid, long addr, long data)
+long sys_ptrace(long request, long pid, long addr, long data)
 {
 	struct task_struct *child;
 	long ret;
diff --git a/include/asm-parisc/unistd.h b/include/asm-parisc/unistd.h
index e7a620c5c5e65a22791b559aa318426ecc209d6d..80b7b98c70a150484875767753d35eddbfde4adc 100644
--- a/include/asm-parisc/unistd.h
+++ b/include/asm-parisc/unistd.h
@@ -1011,7 +1011,6 @@ int sys_clone(unsigned long clone_flags, unsigned long usp,
 		struct pt_regs *regs);
 int sys_vfork(struct pt_regs *regs);
 int sys_pipe(int *fildes);
-long sys_ptrace(long request, pid_t pid, long addr, long data);
 struct sigaction;
 asmlinkage long sys_rt_sigaction(int sig,
 				const struct sigaction __user *act,