diff --git a/langchain/llms/bedrock.py b/langchain/llms/bedrock.py
index a985b2b06c1..22296030719 100644
--- a/langchain/llms/bedrock.py
+++ b/langchain/llms/bedrock.py
@@ -101,7 +101,7 @@ class Bedrock(LLM):
         """Validate that AWS credentials to and python package exists in environment."""
 
         # Skip creating new client if passed in constructor
-        if "client" in values:
+        if values["client"] is not None:
             return values
 
         try: