1 files changed, 0 insertions, 1 deletions
diff --git a/thread.c b/thread.c
index 4ea4c58f5d..190125a296 100644
--- a/thread.c
+++ b/thread.c
@@ -3320,7 +3320,6 @@ rb_thread_wait_fd_rw(int fd, int read)
     if (fd < 0) {
 	rb_raise(rb_eIOError, "closed stream");
     }
-    if (rb_thread_alone()) return;
     while (result <= 0) {
 	result = rb_wait_for_single_fd(fd, events, NULL);