diff --git a/meilidb-core/src/lib.rs b/meilidb-core/src/lib.rs
index 7266aa87d..8b8606ddf 100644
--- a/meilidb-core/src/lib.rs
+++ b/meilidb-core/src/lib.rs
@@ -15,7 +15,7 @@ use slice_group_by::GroupBy;
 use rayon::slice::ParallelSliceMut;
 
 pub use self::index::{Index, IndexBuilder};
-pub use self::query_builder::{FilterFunc, QueryBuilder, DistinctQueryBuilder};
+pub use self::query_builder::{QueryBuilder, DistinctQueryBuilder};
 
 /// Represent an internally generated document unique identifier.
 ///
diff --git a/meilidb-core/src/query_builder.rs b/meilidb-core/src/query_builder.rs
index 6d76cfb48..d5ec79a50 100644
--- a/meilidb-core/src/query_builder.rs
+++ b/meilidb-core/src/query_builder.rs
@@ -35,16 +35,14 @@ fn generate_automatons(query: &str) -> Vec<DfaExt> {
     automatons
 }
 
-pub type FilterFunc = fn(DocumentId) -> bool;
-
-pub struct QueryBuilder<'i, 'c, FI> {
+pub struct QueryBuilder<'i, 'c, FI = fn(DocumentId) -> bool> {
     index: &'i Index,
     criteria: Criteria<'c>,
     searchable_attrs: Option<HashSet<u16>>,
     filter: Option<FI>,
 }
 
-impl<'i, 'c> QueryBuilder<'i, 'c, FilterFunc> {
+impl<'i, 'c> QueryBuilder<'i, 'c, fn(DocumentId) -> bool> {
     pub fn new(index: &'i Index) -> Self {
         QueryBuilder::with_criteria(index, Criteria::default())
     }
diff --git a/meilidb/src/database/view.rs b/meilidb/src/database/view.rs
index 8eb21a4c8..fcbb3fea1 100644
--- a/meilidb/src/database/view.rs
+++ b/meilidb/src/database/view.rs
@@ -6,8 +6,7 @@ use std::{fmt, marker};
 use rocksdb::rocksdb_options::{ReadOptions, EnvOptions, ColumnFamilyOptions};
 use rocksdb::rocksdb::{DB, DBVector, Snapshot, SeekKey, SstFileWriter};
 use serde::de::DeserializeOwned;
-use meilidb_core::{Index, QueryBuilder, FilterFunc};
-use meilidb_core::DocumentId;
+use meilidb_core::{Index, QueryBuilder, DocumentId};
 
 use crate::database::{retrieve_data_schema, retrieve_data_index, retrieve_data_ranked_map, retrieve_config};
 use crate::database::serde::deserializer::Deserializer;
@@ -84,7 +83,7 @@ where D: Deref<Target=DB>
         Ok(())
     }
 
-    pub fn query_builder(&self) -> QueryBuilder<FilterFunc> {
+    pub fn query_builder(&self) -> QueryBuilder {
         QueryBuilder::new(self.index())
     }