1 files changed, 1 insertions, 4 deletions
diff --git a/ext/io/wait/wait.c b/ext/io/wait/wait.c
index 20aab9dd65..13daaf6b53 100644
--- a/ext/io/wait/wait.c
+++ b/ext/io/wait/wait.c
@@ -92,10 +92,7 @@ wait_readable(VALUE p)
 =end
 */
 static VALUE
-io_wait(argc, argv, io)
-    int argc;
-    VALUE *argv;
-    VALUE io;
+io_wait(int argc, VALUE *argv, VALUE io)
 {
     OpenFile *fptr;
     struct wait_readable_arg arg;