diff --git a/neode-ui/src/utils/bitcoinReceive.ts b/neode-ui/src/utils/bitcoinReceive.ts
index 71a133ef..606b02c9 100644
--- a/neode-ui/src/utils/bitcoinReceive.ts
+++ b/neode-ui/src/utils/bitcoinReceive.ts
@@ -19,9 +19,9 @@ export function explainReceiveAddressFailure(error: unknown): string {
   const message = error instanceof Error ? error.message : String(error || '')
 
   // Prefer the structured reason code when present.
-  const codeMatch = message.match(/\[([A-Z_]+)\]/)
-  if (codeMatch && RECEIVE_CODE_MESSAGES[codeMatch[1]]) {
-    return RECEIVE_CODE_MESSAGES[codeMatch[1]]
+  const code = message.match(/\[([A-Z_]+)\]/)?.[1]
+  if (code && RECEIVE_CODE_MESSAGES[code]) {
+    return RECEIVE_CODE_MESSAGES[code]
   }
 
   const lower = message.toLowerCase()