diff --git a/ursa_core/src/error.rs b/ursa_core/src/error.rs
index ca8b4abc..a83860f8 100644
--- a/ursa_core/src/error.rs
+++ b/ursa_core/src/error.rs
@@ -3,6 +3,7 @@ use thiserror::Error as ThisError;
 
 /// The common errors that can occur in Ursa
 #[derive(ThisError, Debug)]
+#[non_exhaustive]
 pub enum UrsaError {
     /// Convert IO errors
     #[error("io error")]
diff --git a/ursa_core/src/lib.rs b/ursa_core/src/lib.rs
index 720c3d81..f01a8e1d 100644
--- a/ursa_core/src/lib.rs
+++ b/ursa_core/src/lib.rs
@@ -1,4 +1,5 @@
-//!
+//! This crate contains shared components used among the
+//! Ursa library
 
 #![deny(
     unused_variables,
@@ -22,4 +23,3 @@ pub use serde_json;
 
 /// The errors generated by ursa components
 pub use error::*;
-