diff --git a/integrations/qdrant/src/haystack_integrations/document_stores/qdrant/document_store.py b/integrations/qdrant/src/haystack_integrations/document_stores/qdrant/document_store.py
index b4d756e57..b5f64b229 100644
--- a/integrations/qdrant/src/haystack_integrations/document_stores/qdrant/document_store.py
+++ b/integrations/qdrant/src/haystack_integrations/document_stores/qdrant/document_store.py
@@ -135,7 +135,7 @@ def __init__(
         self.payload_field_to_index = payload_field_to_index
 
         # Make sure the collection is properly set up
-        self._set_up_collection(index, embedding_dim, on_disk, recreate_index, similarity, payload_field_to_index)
+        self._set_up_collection(index, embedding_dim, recreate_index, similarity, on_disk, payload_field_to_index)
 
         self.embedding_dim = embedding_dim
         self.on_disk = on_disk
@@ -355,9 +355,9 @@ def _set_up_collection(
         self,
         collection_name: str,
         embedding_dim: int,
-        on_disk: bool, # noqa: FBT001
         recreate_collection: bool,  # noqa: FBT001
         similarity: str,
+        on_disk: bool = False,  # noqa: FBT001
         payload_field_to_index: Optional[List[dict]] = None,
     ):
         distance = self._get_distance(similarity)
diff --git a/integrations/qdrant/tests/test_dict_converters.py b/integrations/qdrant/tests/test_dict_converters.py
index 18940fbbf..745890d74 100644
--- a/integrations/qdrant/tests/test_dict_converters.py
+++ b/integrations/qdrant/tests/test_dict_converters.py
@@ -21,6 +21,7 @@ def test_to_dict():
             "path": None,
             "index": "test",
             "embedding_dim": 768,
+            "on_disk": False,
             "content_field": "content",
             "name_field": "name",
             "embedding_field": "embedding",
@@ -42,6 +43,7 @@ def test_to_dict():
             "metadata": {},
             "write_batch_size": 100,
             "scroll_size": 10000,
+            "payload_field_to_index": None,
         },
     }
 
@@ -57,6 +59,7 @@ def test_from_dict():
                 "location": ":memory:",
                 "index": "test",
                 "embedding_dim": 768,
+                "on_disk": False,
                 "content_field": "content",
                 "name_field": "name",
                 "embedding_field": "embedding",
@@ -72,6 +75,7 @@ def test_from_dict():
                 "metadata": {},
                 "write_batch_size": 1000,
                 "scroll_size": 10000,
+                "payload_field_to_index": None,
             },
         }
     )
@@ -82,6 +86,7 @@ def test_from_dict():
             document_store.content_field == "content",
             document_store.name_field == "name",
             document_store.embedding_field == "embedding",
+            document_store.on_disk is False,
             document_store.similarity == "cosine",
             document_store.return_embedding is False,
             document_store.progress_bar,
@@ -101,5 +106,6 @@ def test_from_dict():
             document_store.write_batch_size == 1000,
             document_store.scroll_size == 10000,
             document_store.api_key == Secret.from_env_var("ENV_VAR", strict=False),
+            document_store.payload_field_to_index is None,
         ]
     )
diff --git a/integrations/qdrant/tests/test_retriever.py b/integrations/qdrant/tests/test_retriever.py
index 7521642ff..6e338341f 100644
--- a/integrations/qdrant/tests/test_retriever.py
+++ b/integrations/qdrant/tests/test_retriever.py
@@ -41,6 +41,7 @@ def test_to_dict(self):
                         "path": None,
                         "index": "test",
                         "embedding_dim": 768,
+                        "on_disk": False,
                         "content_field": "content",
                         "name_field": "name",
                         "embedding_field": "embedding",
@@ -62,6 +63,7 @@ def test_to_dict(self):
                         "metadata": {},
                         "write_batch_size": 100,
                         "scroll_size": 10000,
+                        "payload_field_to_index": None,
                     },
                 },
                 "filters": None,