diff --git a/sub/core/src/lib.rs b/sub/core/src/lib.rs
index 51d0ed1..be64942 100644
--- a/sub/core/src/lib.rs
+++ b/sub/core/src/lib.rs
@@ -46,7 +46,7 @@ pub mod prelude {
     };
     pub use crate::ffi::{cfn, cstr, ptr_chain};
     pub use crate::ext::iter::IterExt;
-    pub use crate::ext::ptr::{Pointer, iterate};
+    pub use crate::ext::ptr::{Pointer, iterate, null};
     pub use crate::time::dur;
     pub use crate::fnv1::*;
     pub use crate::pstruct::struct_offset;