diff --git a/integrations/langchain/src/databricks_langchain/vectorstores.py b/integrations/langchain/src/databricks_langchain/vectorstores.py
index ae24f7b4..1ec73856 100644
--- a/integrations/langchain/src/databricks_langchain/vectorstores.py
+++ b/integrations/langchain/src/databricks_langchain/vectorstores.py
@@ -230,6 +230,11 @@ def __init__(
                 f"The `index_name` parameter must be a string, but got {type(index_name).__name__}."
             )
 
+        if index_name.count(".") != 2:
+            raise ValueError(
+                f"The `index_name` parameter must be in the format 'catalog.schema.name', but got {index_name!r}."
+            )
+
         try:
             from databricks.vector_search.client import (  # type: ignore[import]
                 VectorSearchClient,
diff --git a/integrations/langchain/tests/unit_tests/test_vectorstores.py b/integrations/langchain/tests/unit_tests/test_vectorstores.py
index dd92be1f..b352b548 100644
--- a/integrations/langchain/tests/unit_tests/test_vectorstores.py
+++ b/integrations/langchain/tests/unit_tests/test_vectorstores.py
@@ -52,7 +52,9 @@ def test_init_with_endpoint_name() -> None:
     assert vectorsearch.index.describe() == INDEX_DETAILS[DELTA_SYNC_INDEX]
 
 
-@pytest.mark.parametrize("index_name", [None, 123, MagicMock(spec=VectorSearchIndex)])
+@pytest.mark.parametrize(
+    "index_name", [None, 123, "invalid.name", MagicMock(spec=VectorSearchIndex)]
+)
 def test_init_fail_invalid_index_name(index_name) -> None:
     with pytest.raises(ValueError, match="The `index_name` parameter must be"):
         DatabricksVectorSearch(index_name=index_name)