diff --git a/sysdeps/unix/sysv/linux/sparc/sys/ptrace.h b/sysdeps/unix/sysv/linux/sparc/sys/ptrace.h
index a9cca61aea..685340a89e 100644
--- a/sysdeps/unix/sysv/linux/sparc/sys/ptrace.h
+++ b/sysdeps/unix/sysv/linux/sparc/sys/ptrace.h
@@ -172,7 +172,7 @@ enum __ptrace_request
    appear (those that are used for the particular request) as:
      pid_t PID, void *ADDR, int DATA, void *ADDR2
    after REQUEST.  */
-extern long int ptrace __P ((enum __ptrace_request __request, ...));
+extern long int ptrace (enum __ptrace_request __request, ...) __THROW;
 
 __END_DECLS