diff --git a/clippy_lints/src/types.rs b/clippy_lints/src/types.rs
index b674b3888ab..7b1d832f249 100644
--- a/clippy_lints/src/types.rs
+++ b/clippy_lints/src/types.rs
@@ -789,7 +789,8 @@ fn is_unit_literal(expr: &Expr) -> bool {
     /// **Why is this bad?** Dereferencing the resulting pointer may be undefined
     /// behavior.
     ///
-    /// **Known problems:** None.
+    /// **Known problems:** Using `std::ptr::read_unaligned` and `std::ptr::write_unaligned` or similar
+    /// on the resulting pointer is fine.
     ///
     /// **Example:**
     /// ```rust