diff --git a/lightrag/lightrag.py b/lightrag/lightrag.py
index 5137af42..b84e22ef 100644
--- a/lightrag/lightrag.py
+++ b/lightrag/lightrag.py
@@ -208,7 +208,7 @@ class LightRAG:
             logger.info("[Entity Extraction]...")
             maybe_new_kg = await extract_entities(
                 inserting_chunks,
-                knwoledge_graph_inst=self.chunk_entity_relation_graph,
+                knowledge_graph_inst=self.chunk_entity_relation_graph,
                 entity_vdb=self.entities_vdb,
                 relationships_vdb=self.relationships_vdb,
                 global_config=asdict(self),
diff --git a/lightrag/operate.py b/lightrag/operate.py
index a0729cd8..b90a1ca1 100644
--- a/lightrag/operate.py
+++ b/lightrag/operate.py
@@ -124,14 +124,14 @@ async def _handle_single_relationship_extraction(
 async def _merge_nodes_then_upsert(
     entity_name: str,
     nodes_data: list[dict],
-    knwoledge_graph_inst: BaseGraphStorage,
+    knowledge_graph_inst: BaseGraphStorage,
     global_config: dict,
 ):
     already_entitiy_types = []
     already_source_ids = []
     already_description = []
 
-    already_node = await knwoledge_graph_inst.get_node(entity_name)
+    already_node = await knowledge_graph_inst.get_node(entity_name)
     if already_node is not None:
         already_entitiy_types.append(already_node["entity_type"])
         already_source_ids.extend(