diff --git a/crates/index-scheduler/src/utils.rs b/crates/index-scheduler/src/utils.rs
index 92e5e4b99..1ca782f8c 100644
--- a/crates/index-scheduler/src/utils.rs
+++ b/crates/index-scheduler/src/utils.rs
@@ -61,9 +61,9 @@ impl ProcessingBatch {
 
     /// Update itself with the content of the task and update the batch id in the task.
     pub fn processing<'a>(&mut self, tasks: impl IntoIterator<Item = &'a mut Task>) {
-        self.stats.total_nb_tasks += 1;
-
         for task in tasks.into_iter() {
+            self.stats.total_nb_tasks += 1;
+
             task.batch_uid = Some(self.uid);
             // We don't store the statuses in the map since they're all enqueued but we must
             // still store them in the stats since that can be displayed.
diff --git a/crates/meilisearch/tests/batches/mod.rs b/crates/meilisearch/tests/batches/mod.rs
index 81d254f9f..799aa3df7 100644
--- a/crates/meilisearch/tests/batches/mod.rs
+++ b/crates/meilisearch/tests/batches/mod.rs
@@ -46,7 +46,12 @@ async fn list_batches() {
         .await;
     let (response, code) = index.list_batches().await;
     assert_eq!(code, 200);
-    assert_eq!(response["results"].as_array().unwrap().len(), 2);
+    assert_eq!(
+        response["results"].as_array().unwrap().len(),
+        2,
+        "{}",
+        serde_json::to_string_pretty(&response).unwrap()
+    );
 }
 
 #[actix_rt::test]