diff --git a/meilisearch-auth/src/error.rs b/meilisearch-auth/src/error.rs
index dbf28b421..8be97daaf 100644
--- a/meilisearch-auth/src/error.rs
+++ b/meilisearch-auth/src/error.rs
@@ -28,7 +28,7 @@ pub enum AuthControllerError {
     ApiKeyNotFound(String),
     #[error("`uid` field value `{0}` is already an existing API key.")]
     ApiKeyAlreadyExists(String),
-    #[error("`{0}` field cannot be modified for the given resource.")]
+    #[error("The `{0}` field cannot be modified for the given resource.")]
     ImmutableField(String),
     #[error("Internal error: {0}")]
     Internal(Box<dyn Error + Send + Sync + 'static>),
diff --git a/meilisearch-http/tests/auth/api_keys.rs b/meilisearch-http/tests/auth/api_keys.rs
index 4eb1fdd6f..d7e7dad0f 100644
--- a/meilisearch-http/tests/auth/api_keys.rs
+++ b/meilisearch-http/tests/auth/api_keys.rs
@@ -1150,7 +1150,7 @@ async fn error_patch_api_key_indexes() {
     let (response, code) = server.patch_api_key(&uid, content).await;
     assert_eq!(400, code, "{:?}", &response);
 
-    let expected = json!({"message": "`indexes` field cannot be modified for the given resource.",
+    let expected = json!({"message": "The `indexes` field cannot be modified for the given resource.",
         "code": "immutable_field",
         "type": "invalid_request",
         "link": "https://docs.meilisearch.com/errors#immutable_field"
@@ -1206,7 +1206,7 @@ async fn error_patch_api_key_actions() {
     let (response, code) = server.patch_api_key(&uid, content).await;
     assert_eq!(400, code, "{:?}", &response);
 
-    let expected = json!({"message": "`actions` field cannot be modified for the given resource.",
+    let expected = json!({"message": "The `actions` field cannot be modified for the given resource.",
         "code": "immutable_field",
         "type": "invalid_request",
         "link": "https://docs.meilisearch.com/errors#immutable_field"
@@ -1254,7 +1254,7 @@ async fn error_patch_api_key_expiration_date() {
     let (response, code) = server.patch_api_key(&uid, content).await;
     assert_eq!(400, code, "{:?}", &response);
 
-    let expected = json!({"message": "`expiresAt` field cannot be modified for the given resource.",
+    let expected = json!({"message": "The `expiresAt` field cannot be modified for the given resource.",
         "code": "immutable_field",
         "type": "invalid_request",
         "link": "https://docs.meilisearch.com/errors#immutable_field"