1 files changed, 4 insertions, 0 deletions
diff --git a/io.c b/io.c
index 04e46e085d..f3badc966a 100644
--- a/io.c
+++ b/io.c
@@ -2064,6 +2064,10 @@ rb_io_close_m(VALUE io)
 static VALUE
 io_close(VALUE io)
 {
+    if (TYPE(io) == T_FILE) {
+	rb_io_close(io);
+	return Qnil;
+    }
     return rb_funcall(io, rb_intern("close"), 0, 0);
 }