diff --git a/libs/experimental/langchain_experimental/graph_transformers/llm.py b/libs/experimental/langchain_experimental/graph_transformers/llm.py
index 29af044237f..e29cfb01b02 100644
--- a/libs/experimental/langchain_experimental/graph_transformers/llm.py
+++ b/libs/experimental/langchain_experimental/graph_transformers/llm.py
@@ -609,7 +609,9 @@ class LLMGraphTransformer:
         else:
             nodes_set = set()
             relationships = []
-            parsed_json = self.json_repair.loads(raw_schema.content)
+            if not isinstance(raw_schema, str):
+                raw_schema = raw_schema.content
+            parsed_json = self.json_repair.loads(raw_schema)
             for rel in parsed_json:
                 # Nodes need to be deduplicated using a set
                 nodes_set.add((rel["head"], rel["head_type"]))