diff --git a/src/sparse.rs b/src/sparse.rs
index 20a5b9da..93c50173 100644
--- a/src/sparse.rs
+++ b/src/sparse.rs
@@ -70,7 +70,8 @@ impl SparseIndex {
             .cache_path(name)
             .ok_or_else(|| io::Error::new(io::ErrorKind::InvalidInput, "bad name"))?;
 
-        let cache_bytes = std::fs::read(cache_path)?;
+        let cache_bytes = std::fs::read(&cache_path)
+            .map_err(|e| io::Error::new(e.kind(), format!("{}: `{}`", e.to_string(), cache_path.display())))?;
         Ok(Crate::from_cache_slice(&cache_bytes, None)?)
     }