diff --git a/README.md b/README.md
index d3d19bbbb..52dd475ce 100644
--- a/README.md
+++ b/README.md
@@ -164,3 +164,6 @@ The core team will review opened PRs. The SLA is 2 weeks, generally on a first-c
 ## Storybook for UI components
 
 See `storybook/README.md` for details on local Storybook and component docs.
+## Additional Note
+
+When building on Base, always ensure that you are using the correct RPC endpoint for the intended network (mainnet or testnet). Misconfiguration can lead to failed transactions or unexpected behavior.