diff --git a/libs/langchain-aws/src/common.ts b/libs/langchain-aws/src/common.ts
index 8b0d8e0d2e18..d187b6c3d061 100644
--- a/libs/langchain-aws/src/common.ts
+++ b/libs/langchain-aws/src/common.ts
@@ -106,7 +106,7 @@ export function convertToConverseMessages(messages: BaseMessage[]): {
               };
             } else {
               const blockValues = Object.fromEntries(
-                Object.values(block).filter(([key]) => key !== "type")
+                Object.entries(block).filter(([key]) => key !== "type")
               );
               throw new Error(
                 `Unsupported content block type: ${