diff --git a/crates/milli/src/update/new/extract/mod.rs b/crates/milli/src/update/new/extract/mod.rs
index e67f70db1..3601dd9c6 100644
--- a/crates/milli/src/update/new/extract/mod.rs
+++ b/crates/milli/src/update/new/extract/mod.rs
@@ -6,7 +6,10 @@ mod searchable;
 mod vectors;
 
 use bumpalo::Bump;
-pub use cache::{merge_caches, transpose_and_freeze_caches, BalancedCaches, DelAddRoaringBitmap};
+pub use cache::{
+    merge_caches, merge_caches_alt, transpose_and_freeze_caches, BalancedCaches,
+    DelAddRoaringBitmap,
+};
 pub use documents::*;
 pub use faceted::*;
 pub use geo::*;
diff --git a/crates/milli/src/update/new/merger.rs b/crates/milli/src/update/new/merger.rs
index b650b6b53..9f2aae5a8 100644
--- a/crates/milli/src/update/new/merger.rs
+++ b/crates/milli/src/update/new/merger.rs
@@ -9,8 +9,8 @@ use roaring::RoaringBitmap;
 
 use super::channel::*;
 use super::extract::{
-    merge_caches, transpose_and_freeze_caches, BalancedCaches, DelAddRoaringBitmap, FacetKind,
-    GeoExtractorData,
+    merge_caches, merge_caches_alt, transpose_and_freeze_caches, BalancedCaches,
+    DelAddRoaringBitmap, FacetKind, GeoExtractorData,
 };
 use crate::{CboRoaringBitmapCodec, FieldId, GeoPoint, Index, InternalError, Result};
 
@@ -78,7 +78,7 @@ where
         if must_stop_processing() {
             return Err(InternalError::AbortedIndexation.into());
         }
-        merge_caches(frozen, |key, DelAddRoaringBitmap { del, add }| {
+        merge_caches_alt(frozen, |key, DelAddRoaringBitmap { del, add }| {
             let current = database.get(&rtxn, key)?;
             match merge_cbo_bitmaps(current, del, add)? {
                 Operation::Write(bitmap) => {