diff --git a/tests/qdrant_syncronizer/test_qdrant_handler.py b/tests/qdrant_syncronizer/test_qdrant_handler.py
index 788844b..2a49d87 100644
--- a/tests/qdrant_syncronizer/test_qdrant_handler.py
+++ b/tests/qdrant_syncronizer/test_qdrant_handler.py
@@ -43,12 +43,13 @@ def __init__(self, document_id, corpus_id):
 
 
 class FakeSlice:
-    def __init__(self, document_id):
+    def __init__(self, document_id, embedding_model_name="embmodel"):
         self.document_id = document_id
-        self.embedding_model_name = "embmodel"
+        self.embedding_model_name = embedding_model_name
         self.embedding = numpy.random.uniform(low=-1, high=1, size=(50,))
         self.order_sequence = 0
         self.document = FakeDocument(document_id, uuid.uuid4())
+        self.id = uuid.uuid4()
 
 
 class TestQdrantHandler(unittest.TestCase):
@@ -102,3 +103,32 @@ def test_should_handle_multiple_slices_for_same_collection(self):
             "collection_welearn_fr_embmodel": {doc_id1},
         }
         self.assertEqual(collections_names, expected)
+
+    def test_should_handle_multiple_slices_for_same_collection_with_multi_lingual_collection(
+        self,
+    ):
+        self.client.create_collection(
+            collection_name="collection_welearn_mul_mulembmodel",
+            vectors_config=models.VectorParams(
+                size=50, distance=models.Distance.COSINE
+            ),
+        )
+
+        doc_id0 = uuid.uuid4()
+        doc_id1 = uuid.uuid4()
+        qdrant_connector = self.client
+        fake_slice0 = FakeSlice(doc_id0, embedding_model_name="embmodel")
+        fake_slice1 = FakeSlice(doc_id0, embedding_model_name="embmodel")
+
+        fake_slice1.order_sequence = 1
+
+        fake_slice2 = FakeSlice(doc_id1, embedding_model_name="mulembmodel")
+        fake_slice2.document.lang = "pt"
+
+        slices = [fake_slice0, fake_slice1, fake_slice2]
+        collections_names = classify_documents_per_collection(qdrant_connector, slices)
+        expected = {
+            "collection_welearn_en_embmodel": {doc_id0},
+            "collection_welearn_mul_mulembmodel": {doc_id1},
+        }
+        self.assertDictEqual(collections_names, expected)
diff --git a/welearn_datastack/constants.py b/welearn_datastack/constants.py
index 184bbf6..cfb64f0 100644
--- a/welearn_datastack/constants.py
+++ b/welearn_datastack/constants.py
@@ -323,3 +323,5 @@
     "P4404668943",
     "P4404677186",
 ]
+
+QDRANT_MULTI_LINGUAL_CODE = "mul"
diff --git a/welearn_datastack/modules/qdrant_handler.py b/welearn_datastack/modules/qdrant_handler.py
index 16db67b..aaffea2 100644
--- a/welearn_datastack/modules/qdrant_handler.py
+++ b/welearn_datastack/modules/qdrant_handler.py
@@ -8,6 +8,7 @@
 from qdrant_client.grpc import UpdateResult
 from qdrant_client.http.models import models
 
+from welearn_datastack.constants import QDRANT_MULTI_LINGUAL_CODE
 from welearn_datastack.data.db_models import DocumentSlice
 from welearn_datastack.exceptions import (
     ErrorWhileDeletingChunks,
@@ -38,15 +39,22 @@ def classify_documents_per_collection(
     for dslice in slices:
         lang = dslice.document.lang
         model = dslice.embedding_model_name
-        collection_name = f"collection_welearn_{lang}_{model.lower()}"
+        collection_name = (
+            f"collection_welearn_{QDRANT_MULTI_LINGUAL_CODE}_{model.lower()}"
+        )
 
         if collection_name not in collections_names_in_qdrant:
             logger.error(
-                "Collection %s not found in Qdrant, slice %s ignored",
+                "Collection %s not found in Qdrant, attempt with language-specific collection name",
                 collection_name,
                 dslice.id,
             )
-            continue
+            collection_name = f"collection_welearn_{lang}_{model.lower()}"
+            if collection_name not in collections_names_in_qdrant:
+                logger.error(
+                    f"Collection {collection_name} not found in Qdrant, {dslice.id} will be ignored",
+                )
+                continue
 
         if collection_name not in ret:
             ret[collection_name] = set()