diff --git a/meilisearch-http/src/routes/document.rs b/meilisearch-http/src/routes/document.rs
index 817f624d0..5f0d1d1fa 100644
--- a/meilisearch-http/src/routes/document.rs
+++ b/meilisearch-http/src/routes/document.rs
@@ -13,6 +13,7 @@ use crate::Data;
 const DEFAULT_RETRIEVE_DOCUMENTS_OFFSET: usize = 0;
 const DEFAULT_RETRIEVE_DOCUMENTS_LIMIT: usize = 20;
 
+/*
 macro_rules! guard_content_type {
     ($fn_name:ident, $guard_value:literal) => {
         fn $fn_name(head: &actix_web::dev::RequestHead) -> bool {
@@ -29,6 +30,19 @@ macro_rules! guard_content_type {
 }
 
 guard_content_type!(guard_json, "application/json");
+*/
+
+fn guard_json(head: &actix_web::dev::RequestHead) -> bool {
+            if let Some(content_type) = head.headers.get("Content-Type") {
+                content_type
+                    .to_str()
+                    .map(|v| v.contains("application/json"))
+                    .unwrap_or(false)
+            } else {
+                // if no content-type is specified we still accept the data as json!
+                true
+            }
+        }
 
 #[derive(Deserialize)]
 struct DocumentParam {
@@ -146,6 +160,8 @@ async fn add_documents(
     Ok(HttpResponse::Accepted().json(serde_json::json!({ "updateId": update_status.id() })))
 }
 
+/// Route used when the payload type is "application/json"
+/// Used to add or replace documents
 async fn update_documents(
     data: GuardedData<Private, Data>,
     path: web::Path<IndexParam>,
diff --git a/meilisearch-http/tests/documents/add_documents.rs b/meilisearch-http/tests/documents/add_documents.rs
index 5d2a91674..66e475172 100644
--- a/meilisearch-http/tests/documents/add_documents.rs
+++ b/meilisearch-http/tests/documents/add_documents.rs
@@ -1,7 +1,83 @@
+use crate::common::{GetAllDocumentsOptions, Server};
+use actix_web::test;
 use chrono::DateTime;
+use meilisearch_http::create_app;
 use serde_json::{json, Value};
 
-use crate::common::{GetAllDocumentsOptions, Server};
+/// This is the basic usage of our API and every other tests uses the content-type application/json
+#[actix_rt::test]
+async fn add_documents_test_json_content_types() {
+    let document = json!([
+        {
+            "id": 1,
+            "content": "Bouvier Bernois",
+        }
+    ]);
+
+    // this is a what is expected and should work
+    let server = Server::new().await;
+    let app = test::init_service(create_app!(&server.service.0, true)).await;
+    let req = test::TestRequest::post()
+        .uri("/indexes/dog/documents")
+        .set_payload(document.to_string())
+        .insert_header(("content-type", "application/json"))
+        .to_request();
+    let res = test::call_service(&app, req).await;
+    let status_code = res.status();
+    let body = test::read_body(res).await;
+    let response: Value = serde_json::from_slice(&body).unwrap_or_default();
+    assert_eq!(status_code, 202);
+    assert_eq!(response, json!({ "updateId": 0 }));
+}
+
+/// no content type is still supposed to be accepted as json
+#[actix_rt::test]
+async fn add_documents_test_no_content_types() {
+    let document = json!([
+        {
+            "id": 1,
+            "content": "Montagne des Pyrénées",
+        }
+    ]);
+
+    let server = Server::new().await;
+    let app = test::init_service(create_app!(&server.service.0, true)).await;
+    let req = test::TestRequest::post()
+        .uri("/indexes/dog/documents")
+        .set_payload(document.to_string())
+        .insert_header(("content-type", "application/json"))
+        .to_request();
+    let res = test::call_service(&app, req).await;
+    let status_code = res.status();
+    let body = test::read_body(res).await;
+    let response: Value = serde_json::from_slice(&body).unwrap_or_default();
+    assert_eq!(status_code, 202);
+    assert_eq!(response, json!({ "updateId": 0 }));
+}
+
+/// any other content-type is must be refused
+#[actix_rt::test]
+async fn add_documents_test_bad_content_types() {
+    let document = json!([
+        {
+            "id": 1,
+            "content": "Leonberg",
+        }
+    ]);
+
+    let server = Server::new().await;
+    let app = test::init_service(create_app!(&server.service.0, true)).await;
+    let req = test::TestRequest::post()
+        .uri("/indexes/dog/documents")
+        .set_payload(document.to_string())
+        .insert_header(("content-type", "text/plain"))
+        .to_request();
+    let res = test::call_service(&app, req).await;
+    let status_code = res.status();
+    let body = test::read_body(res).await;
+    assert_eq!(status_code, 405);
+    assert!(body.is_empty());
+}
 
 #[actix_rt::test]
 async fn add_documents_no_index_creation() {