diff --git a/python/python/lancedb/rerankers/voyageai.py b/python/python/lancedb/rerankers/voyageai.py
index 0f41ba927..d3dbd59ac 100644
--- a/python/python/lancedb/rerankers/voyageai.py
+++ b/python/python/lancedb/rerankers/voyageai.py
@@ -32,7 +32,7 @@ class VoyageAIReranker(Reranker):
     return_score : str, default "relevance"
         options are "relevance" or "all". Only "relevance" is supported for now.
     api_key : str, default None
-        The API key to use. If None, will use the OPENAI_API_KEY environment variable.
+        The API key to use. If None, will use the VOYAGE_API_KEY environment variable.
     truncation : Optional[bool], default None
     """