diff --git a/crates/milli/src/vector/store.rs b/crates/milli/src/vector/store.rs
index 908c73ca5..037c0d565 100644
--- a/crates/milli/src/vector/store.rs
+++ b/crates/milli/src/vector/store.rs
@@ -119,10 +119,10 @@ impl VectorStore {
         &mut self,
         wtxn: &mut RwTxn,
         progress: Progress,
-        must_stop_processing: MSP,
+        must_stop_processing: &MSP,
     ) -> crate::Result<()>
     where
-        MSP: Fn() -> bool + Sync + Send,
+        MSP: Fn() -> bool + Sync,
     {
         if self.backend == VectorStoreBackend::Arroy {
             self.backend = VectorStoreBackend::Hannoy;