diff --git a/src/libstd/thread/mod.rs b/src/libstd/thread/mod.rs
index dc2d12bf2c4..e5a28c27cf0 100644
--- a/src/libstd/thread/mod.rs
+++ b/src/libstd/thread/mod.rs
@@ -451,7 +451,7 @@ impl Builder {
     /// [`Builder::spawn`]: ../../std/thread/struct.Builder.html#method.spawn
     /// [`io::Result`]: ../../std/io/type.Result.html
     /// [`JoinHandle`]: ../../std/thread/struct.JoinHandle.html
-    #[unstable(feature = "thread_spawn_unchecked", issue = "0")]
+    #[unstable(feature = "thread_spawn_unchecked", issue = "55132")]
     pub unsafe fn spawn_unchecked<F, T>(self, f: F) -> io::Result<JoinHandle<T>> where
         F: FnOnce() -> T, F: Send, T: Send
     {