diff --git a/lib/utils/ens-cache.js b/lib/utils/ens-cache.js
index 603d2b795..526847d55 100644
--- a/lib/utils/ens-cache.js
+++ b/lib/utils/ens-cache.js
@@ -1,148 +1,159 @@
 // @flow
 
 import namehash from 'eth-ens-namehash';
 
 const cacheTimeout = 24 * 60 * 60 * 1000; // one day
 
 export type EthersProvider = {
   +lookupAddress: (address: string) => Promise<?string>,
   +resolveName: (name: string) => Promise<?string>,
   ...
 };
 type ENSNameQueryCacheEntry = {
   // We normalize ETH addresses to lowercase characters
   +normalizedETHAddress: string,
   +cacheInsertionTime: number,
   // We normalize ENS names using eth-ens-namehash
   +normalizedENSName: ?string,
 };
 type ENSAddressQueryCacheEntry = {
   +normalizedENSName: string,
   +cacheInsertionTime: number,
   +normalizedETHAddress: ?string,
 };
 
+const normalizeETHAddress = (ethAddress: string) => ethAddress.toLowerCase();
+
+// Note: this normalization is a little different than the ETH address
+// normalization. The difference is that ETH addresses are
+// case-insensitive, but a normalized ENS name is not the same as its input.
+// Whereas we use normalizeETHAddress just to dedup inputs, we use this
+// function to check if an ENS name matches its normalized ENS name, as a way
+// to prevent homograph attacks.
+// See https://docs.ens.domains/dapp-developer-guide/resolving-names#reverse-resolution
+const normalizeENSName = (ensName: string) => namehash.normalize(ensName);
+
 // We have a need for querying ENS names from both clients as well as from
 // keyserver code. On the client side, we could use wagmi's caching behavior,
 // but that doesn't work for keyserver since it's React-specific. To keep
 // caching behavior consistent across platforms, we instead introduce this
 // vanilla JS class that handles querying and caching ENS for all cases.
 class ENSCache {
   provider: EthersProvider;
   // Maps from normalized ETH address to a cache entry for that address
   nameQueryCache: Map<string, ENSNameQueryCacheEntry> = new Map();
   // Maps from normalized ETH name to a cache entry for that name
   addressQueryCache: Map<string, ENSAddressQueryCacheEntry> = new Map();
 
   constructor(provider: EthersProvider) {
     this.provider = provider;
   }
 
   // Getting a name for an ETH address is referred to as "reverse resolution".
   // 1. Since any address can set a reverse resolution to an arbitrary ENS name
   //    (without permission from the owner), this function will also perform a
   //    "forward resolution" to confirm that the owner of the ENS name has
-  //    mapped it to this address.
+  //    mapped it to this address
   // 2. We only consider an ENS name valid if it's equal to its normalized
   //    version via eth-ens-namehash. This is to protect against homograph
-  //    attacks. See https://docs.ens.domains/dapp-developer-guide/resolving-names#reverse-resolution
+  //    attacks
   // If we fail to find an ENS name for an address, fail to confirm a matching
   // forward resolution, or if the ENS name does not equal its normalized
   // version, we will return undefined.
   async getNameForAddress(ethAddress: string): Promise<?string> {
-    const normalizedETHAddress = ethAddress.toLowerCase();
+    const normalizedETHAddress = normalizeETHAddress(ethAddress);
 
     const cacheResult = this.getCachedNameForAddress(normalizedETHAddress);
     if (cacheResult) {
       return cacheResult;
     }
 
     const cacheAndReturnResult = (result: ?string) => {
       this.nameQueryCache.set(normalizedETHAddress, {
         normalizedETHAddress,
         cacheInsertionTime: Date.now(),
         normalizedENSName: result,
       });
       return result;
     };
 
     // ethers.js handles checking forward resolution (point 1 above) for us
     const ensName = await this.provider.lookupAddress(normalizedETHAddress);
     if (!ensName) {
       return cacheAndReturnResult(undefined);
     }
 
-    const normalizedENSName = namehash.normalize(ensName);
+    const normalizedENSName = normalizeENSName(ensName);
     if (normalizedENSName !== ensName) {
       return cacheAndReturnResult(undefined);
     }
 
     return cacheAndReturnResult(normalizedENSName);
   }
 
   getCachedNameForAddress(ethAddress: string): ?string {
-    const normalizedETHAddress = ethAddress.toLowerCase();
+    const normalizedETHAddress = normalizeETHAddress(ethAddress);
 
     const cacheResult = this.nameQueryCache.get(normalizedETHAddress);
     if (!cacheResult) {
       return undefined;
     }
 
     const { cacheInsertionTime, normalizedENSName } = cacheResult;
     if (cacheInsertionTime + cacheTimeout <= Date.now()) {
       this.nameQueryCache.delete(normalizedETHAddress);
       return undefined;
     }
 
     return normalizedENSName;
   }
 
   async getAddressForName(ensName: string): Promise<?string> {
-    const normalizedENSName = namehash.normalize(ensName);
+    const normalizedENSName = normalizeENSName(ensName);
     if (normalizedENSName !== ensName) {
       return undefined;
     }
 
     const cacheResult = this.getCachedAddressForName(normalizedENSName);
     if (cacheResult) {
       return cacheResult;
     }
 
     const cacheAndReturnResult = (result: ?string) => {
       this.addressQueryCache.set(normalizedENSName, {
         normalizedENSName,
         cacheInsertionTime: Date.now(),
         normalizedETHAddress: result,
       });
       return result;
     };
 
     const ethAddress = await this.provider.resolveName(normalizedENSName);
     if (!ethAddress) {
       return cacheAndReturnResult(undefined);
     }
-    return cacheAndReturnResult(ethAddress.toLowerCase());
+    return cacheAndReturnResult(normalizeETHAddress(ethAddress));
   }
 
   getCachedAddressForName(ensName: string): ?string {
-    const normalizedENSName = namehash.normalize(ensName);
+    const normalizedENSName = normalizeENSName(ensName);
     if (normalizedENSName !== ensName) {
       return undefined;
     }
 
     const cacheResult = this.addressQueryCache.get(normalizedENSName);
     if (!cacheResult) {
       return undefined;
     }
 
     const { cacheInsertionTime, normalizedETHAddress } = cacheResult;
     if (cacheInsertionTime + cacheTimeout <= Date.now()) {
       this.addressQueryCache.delete(normalizedENSName);
       return undefined;
     }
 
     return normalizedETHAddress;
   }
 }
 
 export { ENSCache };