diff --git a/src/vtab/mod.rs b/src/vtab/mod.rs
index cb26bcc..5a87a36 100644
--- a/src/vtab/mod.rs
+++ b/src/vtab/mod.rs
@@ -520,6 +520,8 @@ impl OrderBy<'_> {
 
 /// Virtual table cursor trait.
 ///
+/// # Safety
+///
 /// Implementations must be like:
 /// ```rust,ignore
 /// #[repr(C)]