1 files changed, 1 insertions, 2 deletions
diff --git a/io/dup.c b/io/dup.c
index a461a42f68..b501d22fc5 100644
--- a/io/dup.c
+++ b/io/dup.c
@@ -21,8 +21,7 @@
 
 /* Duplicate FD, returning a new file descriptor open on the same file.  */
 int
-__dup (fd)
-     int fd;
+__dup (int fd)
 {
   __set_errno (ENOSYS);
   return -1;