1 files changed, 1 insertions, 1 deletions
diff --git a/thread.c b/thread.c
index 16e890656b..0466381f73 100644
--- a/thread.c
+++ b/thread.c
@@ -2704,7 +2704,7 @@ rb_thread_select(int max, fd_set * read, fd_set * write, fd_set * except,
     }
     if (except) {
 	efds = &fdsets[2];
-	rb_fd_init(wfds);
+	rb_fd_init(efds);
 	rb_fd_copy(efds, except, max);
     }