diff --git a/crates/meilisearch/tests/common/index.rs b/crates/meilisearch/tests/common/index.rs
index 24db6776b..e324d2ff5 100644
--- a/crates/meilisearch/tests/common/index.rs
+++ b/crates/meilisearch/tests/common/index.rs
@@ -294,6 +294,20 @@ impl Index<'_, Shared> {
         }
         (task, code)
     }
+
+    pub async fn update_index_fail(&self, primary_key: Option<&str>) -> (Value, StatusCode) {
+        let (mut task, code) = self._update(primary_key).await;
+        if code.is_success() {
+            task = self.wait_task(task.uid()).await;
+            if task.is_success() {
+                panic!(
+                    "`update_index_fail` succeeded: {}",
+                    serde_json::to_string_pretty(&task).unwrap()
+                );
+            }
+        }
+        (task, code)
+    }
 }
 
 #[allow(dead_code)]
@@ -337,6 +351,14 @@ impl<State> Index<'_, State> {
         self.service.post_encoded("/indexes", body, self.encoder).await
     }
 
+    pub(super) async fn _update(&self, primary_key: Option<&str>) -> (Value, StatusCode) {
+        let body = json!({
+            "primaryKey": primary_key,
+        });
+        let url = format!("/indexes/{}", urlencode(self.uid.as_ref()));
+        self.service.patch_encoded(url, body, self.encoder).await
+    }
+
     pub(super) async fn _delete(&self) -> (Value, StatusCode) {
         let url = format!("/indexes/{}", urlencode(self.uid.as_ref()));
         self.service.delete(url).await
diff --git a/crates/meilisearch/tests/index/update_index.rs b/crates/meilisearch/tests/index/update_index.rs
index a17e7c63f..291700728 100644
--- a/crates/meilisearch/tests/index/update_index.rs
+++ b/crates/meilisearch/tests/index/update_index.rs
@@ -2,7 +2,7 @@ use time::format_description::well_known::Rfc3339;
 use time::OffsetDateTime;
 
 use crate::common::encoder::Encoder;
-use crate::common::Server;
+use crate::common::{shared_does_not_exists_index, shared_index_with_documents, Server};
 use crate::json;
 
 #[actix_rt::test]
@@ -69,24 +69,9 @@ async fn update_nothing() {
 
 #[actix_rt::test]
 async fn error_update_existing_primary_key() {
-    let server = Server::new_shared();
-    let index = server.unique_index();
-    let (create_task, code) = index.create(Some("id")).await;
+    let index = shared_index_with_documents().await;
 
-    assert_eq!(code, 202);
-    index.wait_task(create_task.uid()).await.succeeded();
-
-    let documents = json!([
-        {
-            "id": "11",
-            "content": "foobar"
-        }
-    ]);
-    let (add_docs_task, add_docs_status_code) = index.add_documents(documents, None).await;
-    assert_eq!(add_docs_status_code, 202);
-    index.wait_task(add_docs_task.uid()).await.succeeded();
-
-    let (update_task, code) = index.update(Some("primary")).await;
+    let (update_task, code) = index.update_index_fail(Some("primary")).await;
 
     assert_eq!(code, 202);
     let response = index.wait_task(update_task.uid()).await.failed();
@@ -103,9 +88,8 @@ async fn error_update_existing_primary_key() {
 
 #[actix_rt::test]
 async fn error_update_unexisting_index() {
-    let server = Server::new_shared();
-    let index = server.unique_index();
-    let (task, code) = index.update(None).await;
+    let index = shared_does_not_exists_index().await;
+    let (task, code) = index.update_index_fail(Some("my-primary-key")).await;
 
     assert_eq!(code, 202);