diff --git a/library/core/src/mem/maybe_uninit.rs b/library/core/src/mem/maybe_uninit.rs
index 7732525a0fc28..cf721b01ce3c6 100644
--- a/library/core/src/mem/maybe_uninit.rs
+++ b/library/core/src/mem/maybe_uninit.rs
@@ -336,8 +336,8 @@ impl<T> MaybeUninit<T> {
     /// assert_eq!(x, (0, false));
     /// ```
     ///
-    /// *Incorrect* usage of this function: initializing a struct with zero, where some fields
-    /// cannot hold 0 as a valid value.
+    /// *Incorrect* usage of this function: calling `x.zeroed().assume_init()`
+    /// when `0` is not a valid bit-pattern for the type:
     ///
     /// ```rust,no_run
     /// use std::mem::MaybeUninit;