diff --git a/web3.js/src/connection.js b/web3.js/src/connection.js
index cea9b8236f..7452dc3158 100644
--- a/web3.js/src/connection.js
+++ b/web3.js/src/connection.js
@@ -399,9 +399,9 @@ const GetVoteAccounts = jsonRpcResult(
         nodePubkey: 'string',
         activatedStake: 'number',
         epochVoteAccount: 'boolean',
-        epochCredits: struct.union(['null', struct.list([
+        epochCredits: struct.list([
           struct.tuple(['number', 'number', 'number']),
-        ])]),
+        ]),
         commission: 'number',
         lastVote: 'number',
         rootSlot: 'number?',
@@ -413,9 +413,9 @@ const GetVoteAccounts = jsonRpcResult(
         nodePubkey: 'string',
         activatedStake: 'number',
         epochVoteAccount: 'boolean',
-        epochCredits: struct.union(['null', struct.list([
+        epochCredits: struct.list([
           struct.tuple(['number', 'number', 'number']),
-        ])]),
+        ]),
         commission: 'number',
         lastVote: 'number',
         rootSlot: 'number?',