diff --git a/.changeset/popular-ducks-travel.md b/.changeset/popular-ducks-travel.md
new file mode 100644
index 0000000000..4f870bee6c
--- /dev/null
+++ b/.changeset/popular-ducks-travel.md
@@ -0,0 +1,5 @@
+---
+"@rainbow-me/rainbowkit": patch
+---
+
+Fixed a bug where wagmi would throw `ChainNotConfiguredError` if `mainnet` is not configured as a chain. This is happening when fetching ens name and ens avatar.
diff --git a/packages/rainbowkit/src/hooks/useIsMainnetConfigured.ts b/packages/rainbowkit/src/hooks/useIsMainnetConfigured.ts
new file mode 100644
index 0000000000..b75f4e4f0a
--- /dev/null
+++ b/packages/rainbowkit/src/hooks/useIsMainnetConfigured.ts
@@ -0,0 +1,14 @@
+import { mainnet } from 'wagmi/chains';
+import { useRainbowKitChains } from '../components/RainbowKitProvider/RainbowKitChainContext';
+
+export function useIsMainnetConfigured() {
+  const rainbowKitChains = useRainbowKitChains();
+
+  const chainId = mainnet.id;
+
+  const configured = rainbowKitChains.some(
+    (rainbowKitChain) => rainbowKitChain.id === chainId,
+  );
+
+  return configured;
+}
diff --git a/packages/rainbowkit/src/hooks/useMainnetEnsAvatar.ts b/packages/rainbowkit/src/hooks/useMainnetEnsAvatar.ts
index 601e9de7c4..f4e7c73c0d 100644
--- a/packages/rainbowkit/src/hooks/useMainnetEnsAvatar.ts
+++ b/packages/rainbowkit/src/hooks/useMainnetEnsAvatar.ts
@@ -1,11 +1,17 @@
 import { GetEnsNameReturnType, normalize } from 'viem/ens';
 import { useEnsAvatar } from 'wagmi';
 import { mainnet } from 'wagmi/chains';
+import { useIsMainnetConfigured } from './useIsMainnetConfigured';
 
 export function useMainnetEnsAvatar(name: GetEnsNameReturnType | undefined) {
+  const mainnetConfigured = useIsMainnetConfigured();
+
   const { data: ensAvatar } = useEnsAvatar({
     chainId: mainnet.id,
     name: name ? normalize(name) : undefined,
+    query: {
+      enabled: mainnetConfigured,
+    },
   });
 
   return ensAvatar;
diff --git a/packages/rainbowkit/src/hooks/useMainnetEnsName.ts b/packages/rainbowkit/src/hooks/useMainnetEnsName.ts
index 14d642622e..3ace895f6c 100644
--- a/packages/rainbowkit/src/hooks/useMainnetEnsName.ts
+++ b/packages/rainbowkit/src/hooks/useMainnetEnsName.ts
@@ -1,11 +1,17 @@
 import { Address } from 'viem';
 import { useEnsName } from 'wagmi';
 import { mainnet } from 'wagmi/chains';
+import { useIsMainnetConfigured } from './useIsMainnetConfigured';
 
 export function useMainnetEnsName(address: Address | undefined) {
+  const mainnetConfigured = useIsMainnetConfigured();
+
   const { data: ensName } = useEnsName({
     chainId: mainnet.id,
     address,
+    query: {
+      enabled: mainnetConfigured,
+    },
   });
 
   return ensName;