diff --git a/library/std/src/sys/thread_local/mod.rs b/library/std/src/sys/thread_local/mod.rs
index 4fcea052ed0..7500c95d8b4 100644
--- a/library/std/src/sys/thread_local/mod.rs
+++ b/library/std/src/sys/thread_local/mod.rs
@@ -94,7 +94,7 @@ pub unsafe fn initialize<F: FnOnce() -> T>(&self, init: F) -> &'static T {
         /// Watch out: unsynchronized internal mutability!
         ///
         /// # Safety
-        /// Unsound if called while any `&'static T` is active.
+        /// Causes UB if any reference to the value is used after this.
         #[allow(unused)]
         pub(crate) unsafe fn take(&self) -> Option<T> {
             let mutable: *mut _ = UnsafeCell::get(&self.inner);