diff --git a/honeycomb-core/src/cmap2/structure.rs b/honeycomb-core/src/cmap2/structure.rs
index f9af964ad..1929740ac 100644
--- a/honeycomb-core/src/cmap2/structure.rs
+++ b/honeycomb-core/src/cmap2/structure.rs
@@ -5,6 +5,9 @@
 
 // ------ IMPORTS
 
+#[cfg(doc)]
+use crate::NULL_DART_ID;
+
 use super::CMAP2_BETA;
 use crate::{AttrSparseVec, CoordsFloat, DartIdentifier, Vertex2};
 use std::collections::BTreeSet;
diff --git a/honeycomb-core/src/lib.rs b/honeycomb-core/src/lib.rs
index b4b65212c..4bf5c2db5 100644
--- a/honeycomb-core/src/lib.rs
+++ b/honeycomb-core/src/lib.rs
@@ -18,6 +18,7 @@
 // ------ CUSTOM LINTS
 
 // --- enable doc_auto_cfg feature if compiling in nightly
+#![allow(unexpected_cfgs)]
 #![cfg_attr(nightly, feature(doc_auto_cfg))]
 // --- some though love for the code
 #![warn(missing_docs)]