diff --git a/meilisearch/tests/documents/add_documents.rs b/meilisearch/tests/documents/add_documents.rs
index b1262fa2d..85fc61503 100644
--- a/meilisearch/tests/documents/add_documents.rs
+++ b/meilisearch/tests/documents/add_documents.rs
@@ -1040,6 +1040,52 @@ async fn document_addition_with_primary_key() {
     "###);
 }
 
+#[actix_rt::test]
+async fn document_addition_with_huge_int_primary_key() {
+    let server = Server::new().await;
+    let index = server.index("test");
+
+    let documents = json!([
+        {
+            "primary": 14630868576586246730u64,
+            "content": "foo",
+        }
+    ]);
+    let (response, code) = index.add_documents(documents, Some("primary")).await;
+    snapshot!(code, @"202 Accepted");
+
+    let response = index.wait_task(response.uid()).await;
+    snapshot!(response,
+        @r###"
+    {
+      "uid": 0,
+      "indexUid": "test",
+      "status": "succeeded",
+      "type": "documentAdditionOrUpdate",
+      "canceledBy": null,
+      "details": {
+        "receivedDocuments": 1,
+        "indexedDocuments": 1
+      },
+      "error": null,
+      "duration": "[duration]",
+      "enqueuedAt": "[date]",
+      "startedAt": "[date]",
+      "finishedAt": "[date]"
+    }
+    "###);
+
+    let (response, code) = index.get_document(14630868576586246730u64, None).await;
+    snapshot!(code, @"200 OK");
+    snapshot!(json_string!(response),
+        @r###"
+    {
+      "primary": 14630868576586246730,
+      "content": "foo"
+    }
+    "###);
+}
+
 #[actix_rt::test]
 async fn replace_document() {
     let server = Server::new().await;
diff --git a/milli/src/documents/primary_key.rs b/milli/src/documents/primary_key.rs
index 29f95beaf..22918f8fc 100644
--- a/milli/src/documents/primary_key.rs
+++ b/milli/src/documents/primary_key.rs
@@ -166,7 +166,7 @@ pub fn validate_document_id_value(document_id: Value) -> StdResult<String, UserE
             Some(s) => Ok(s.to_string()),
             None => Err(UserError::InvalidDocumentId { document_id: Value::String(string) }),
         },
-        Value::Number(number) if number.is_i64() => Ok(number.to_string()),
+        Value::Number(number) if !number.is_f64() => Ok(number.to_string()),
         content => Err(UserError::InvalidDocumentId { document_id: content }),
     }
 }