diff --git a/src/app/(sidebar)/transactions-explorer/tx/[tx]/components/TransactionDetails.tsx b/src/app/(sidebar)/transactions-explorer/tx/[tx]/components/TransactionDetails.tsx
index e8dc6bcf1..77232a358 100644
--- a/src/app/(sidebar)/transactions-explorer/tx/[tx]/components/TransactionDetails.tsx
+++ b/src/app/(sidebar)/transactions-explorer/tx/[tx]/components/TransactionDetails.tsx
@@ -50,8 +50,7 @@ export function TransactionDetails({
   const [xdrJson, setXdrJson] = useState<Record<string, unknown> | null>(null);
   const [xdr, setXdr] = useState("");
   const innerTx = tx.feeBump
-    ? // @ts-expect-error fee bump tx has innerTx.
-      tx.envelopeXdr.value().tx().innerTx().value().tx()
+    ? tx.envelopeXdr.value().tx().innerTx().value().tx()
     : tx.envelopeXdr.value().tx();
   const sourceAccount = StrKey.encodeEd25519PublicKey(
     innerTx.sourceAccount().value(),
diff --git a/src/store/createStore.ts b/src/store/createStore.ts
index afb14644a..cc70ca955 100644
--- a/src/store/createStore.ts
+++ b/src/store/createStore.ts
@@ -214,11 +214,15 @@ interface CreateStoreOptions {
 // lab that runs on quickstart. This can be enabled by passing
 // `NEXT_PUBLIC_DEFAULT_NETWORK=custom` as an env var.
 const defaultCustomNetwork = {
-  id: "custom",
+  id: "custom" as const,
   label: "Custom",
-  horizonUrl: "http://localhost:8000",
-  rpcUrl: "http://localhost:8000/rpc",
-  passphrase: "Standalone Network ; February 2017",
+  horizonUrl:
+    process.env.NEXT_PUBLIC_CUSTOM_HORIZON_URL ?? "http://localhost:8000",
+  rpcUrl:
+    process.env.NEXT_PUBLIC_CUSTOM_RPC_URL ?? "http://localhost:8000/rpc",
+  passphrase:
+    process.env.NEXT_PUBLIC_CUSTOM_PASSPHRASE ??
+    "Standalone Network ; February 2017",
 };
 
 const initNetwork =