diff --git a/meilisearch/tests/search/mod.rs b/meilisearch/tests/search/mod.rs
index f601e2b03..771eee21b 100644
--- a/meilisearch/tests/search/mod.rs
+++ b/meilisearch/tests/search/mod.rs
@@ -895,9 +895,9 @@ async fn test_score_details() {
                     "id": "166428",
                     "_vectors": {
                       "manual": [
-                        -100,
-                        231,
-                        32
+                        -100.0,
+                        231.0,
+                        32.0
                       ]
                     },
                     "_rankingScoreDetails": {
@@ -1096,9 +1096,9 @@ async fn experimental_feature_vector_store() {
         "id": "287947",
         "_vectors": {
           "manual": [
-            1,
-            2,
-            3
+            1.0,
+            2.0,
+            3.0
           ]
         },
         "_rankingScore": 1.0
@@ -1108,9 +1108,9 @@ async fn experimental_feature_vector_store() {
         "id": "299537",
         "_vectors": {
           "manual": [
-            1,
-            2,
-            54
+            1.0,
+            2.0,
+            54.0
           ]
         },
         "_rankingScore": 0.9129111766815186
@@ -1120,9 +1120,9 @@ async fn experimental_feature_vector_store() {
         "id": "450465",
         "_vectors": {
           "manual": [
-            -100,
-            340,
-            90
+            -100.0,
+            340.0,
+            90.0
           ]
         },
         "_rankingScore": 0.8106412887573242
@@ -1132,9 +1132,9 @@ async fn experimental_feature_vector_store() {
         "id": "166428",
         "_vectors": {
           "manual": [
-            -100,
-            231,
-            32
+            -100.0,
+            231.0,
+            32.0
           ]
         },
         "_rankingScore": 0.7412010431289673
@@ -1144,9 +1144,9 @@ async fn experimental_feature_vector_store() {
         "id": "522681",
         "_vectors": {
           "manual": [
-            10,
-            -23,
-            32
+            10.0,
+            -23.0,
+            32.0
           ]
         },
         "_rankingScore": 0.6972063183784485
@@ -1405,9 +1405,9 @@ async fn simple_search_with_strange_synonyms() {
                 "id": "166428",
                 "_vectors": {
                   "manual": [
-                    -100,
-                    231,
-                    32
+                    -100.0,
+                    231.0,
+                    32.0
                   ]
                 }
               }
@@ -1426,9 +1426,9 @@ async fn simple_search_with_strange_synonyms() {
                 "id": "166428",
                 "_vectors": {
                   "manual": [
-                    -100,
-                    231,
-                    32
+                    -100.0,
+                    231.0,
+                    32.0
                   ]
                 }
               }
@@ -1447,9 +1447,9 @@ async fn simple_search_with_strange_synonyms() {
                 "id": "166428",
                 "_vectors": {
                   "manual": [
-                    -100,
-                    231,
-                    32
+                    -100.0,
+                    231.0,
+                    32.0
                   ]
                 }
               }
diff --git a/meilisearch/tests/search/multi.rs b/meilisearch/tests/search/multi.rs
index aeec1bad4..b5cf8f476 100644
--- a/meilisearch/tests/search/multi.rs
+++ b/meilisearch/tests/search/multi.rs
@@ -75,9 +75,9 @@ async fn simple_search_single_index() {
             "id": "450465",
             "_vectors": {
               "manual": [
-                -100,
-                340,
-                90
+                -100.0,
+                340.0,
+                90.0
               ]
             }
           }
@@ -96,9 +96,9 @@ async fn simple_search_single_index() {
             "id": "299537",
             "_vectors": {
               "manual": [
-                1,
-                2,
-                54
+                1.0,
+                2.0,
+                54.0
               ]
             }
           }
@@ -194,9 +194,9 @@ async fn simple_search_two_indexes() {
             "id": "450465",
             "_vectors": {
               "manual": [
-                -100,
-                340,
-                90
+                -100.0,
+                340.0,
+                90.0
               ]
             }
           }
@@ -227,9 +227,9 @@ async fn simple_search_two_indexes() {
             "cattos": "pésti",
             "_vectors": {
               "manual": [
-                1,
-                2,
-                3
+                1.0,
+                2.0,
+                3.0
               ]
             }
           },
@@ -249,9 +249,9 @@ async fn simple_search_two_indexes() {
             ],
             "_vectors": {
               "manual": [
-                1,
-                2,
-                54
+                1.0,
+                2.0,
+                54.0
               ]
             }
           }
diff --git a/milli/src/update/index_documents/typed_chunk.rs b/milli/src/update/index_documents/typed_chunk.rs
index 6f11dd585..6615a4bc3 100644
--- a/milli/src/update/index_documents/typed_chunk.rs
+++ b/milli/src/update/index_documents/typed_chunk.rs
@@ -234,11 +234,13 @@ pub(crate) fn write_typed_chunk_into_index(
                                         addition,
                                     )
                                 else {
+                                    // if the `_vectors` field cannot be parsed as map of vectors, just write it as-is
                                     break 'vectors Some(addition);
                                 };
                                 vectors.retain_user_provided_vectors();
                                 let crate::vector::parsed_vectors::ParsedVectors(vectors) = vectors;
                                 if vectors.is_empty() {
+                                    // skip writing empty `_vectors` map
                                     break 'vectors None;
                                 }