diff --git a/meilidb-core/src/data/doc_ids.rs b/meilidb-core/src/data/doc_ids.rs
deleted file mode 100644
index ff951bb35..000000000
--- a/meilidb-core/src/data/doc_ids.rs
+++ /dev/null
@@ -1,61 +0,0 @@
-use std::slice::from_raw_parts;
-use std::mem::size_of;
-use std::error::Error;
-
-use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
-use sdset::Set;
-
-use crate::shared_data_cursor::{SharedDataCursor, FromSharedDataCursor};
-use crate::write_to_bytes::WriteToBytes;
-use crate::data::SharedData;
-use crate::DocumentId;
-
-use super::into_u8_slice;
-
-#[derive(Default, Clone)]
-pub struct DocIds(SharedData);
-
-impl DocIds {
-    pub fn new(ids: &Set<DocumentId>) -> DocIds {
-        let bytes = unsafe { into_u8_slice(ids.as_slice()) };
-        let data = SharedData::from_bytes(bytes.to_vec());
-        DocIds(data)
-    }
-
-    pub fn is_empty(&self) -> bool {
-        self.0.is_empty()
-    }
-
-    pub fn as_bytes(&self) -> &[u8] {
-        &self.0
-    }
-}
-
-impl AsRef<Set<DocumentId>> for DocIds {
-    fn as_ref(&self) -> &Set<DocumentId> {
-        let slice = &self.0;
-        let ptr = slice.as_ptr() as *const DocumentId;
-        let len = slice.len() / size_of::<DocumentId>();
-        let slice = unsafe { from_raw_parts(ptr, len) };
-        Set::new_unchecked(slice)
-    }
-}
-
-impl FromSharedDataCursor for DocIds {
-    type Error = Box<Error>;
-
-    fn from_shared_data_cursor(cursor: &mut SharedDataCursor) -> Result<DocIds, Self::Error> {
-        let len = cursor.read_u64::<LittleEndian>()? as usize;
-        let data = cursor.extract(len);
-
-        Ok(DocIds(data))
-    }
-}
-
-impl WriteToBytes for DocIds {
-    fn write_to_bytes(&self, bytes: &mut Vec<u8>) {
-        let len = self.0.len() as u64;
-        bytes.write_u64::<LittleEndian>(len).unwrap();
-        bytes.extend_from_slice(&self.0);
-    }
-}
diff --git a/meilidb-core/src/data/mod.rs b/meilidb-core/src/data/mod.rs
index 895f553a6..195a71cdc 100644
--- a/meilidb-core/src/data/mod.rs
+++ b/meilidb-core/src/data/mod.rs
@@ -1,11 +1,9 @@
-mod doc_ids;
 mod doc_indexes;
 mod shared_data;
 
 use std::slice::from_raw_parts;
 use std::mem::size_of;
 
-pub use self::doc_ids::DocIds;
 pub use self::doc_indexes::{DocIndexes, DocIndexesBuilder};
 pub use self::shared_data::SharedData;