diff --git a/extensions/whatsapp/src/setup-finalize.ts b/extensions/whatsapp/src/setup-finalize.ts
index b34d972061a..71ccbdcc28a 100644
--- a/extensions/whatsapp/src/setup-finalize.ts
+++ b/extensions/whatsapp/src/setup-finalize.ts
@@ -124,7 +124,7 @@ async function promptWhatsAppOwnerAllowFrom(params: {
     placeholder: "+15555550123",
     initialValue: existingAllowFrom[0],
     validate: (value) => {
-      const raw = String(value ?? "").trim();
+      const raw = value.trim();
       if (!raw) {
         return "Required";
       }
@@ -136,7 +136,7 @@ async function promptWhatsAppOwnerAllowFrom(params: {
     },
   });
 
-  const normalized = normalizeE164(String(entry).trim());
+  const normalized = normalizeE164(entry.trim());
   if (!normalized) {
     throw new Error("Invalid WhatsApp owner number (expected E.164 after validation).");
   }
@@ -311,7 +311,7 @@ async function promptWhatsAppDmAccess(params: {
     message: "Allowed sender numbers (comma-separated, E.164)",
     placeholder: "+15555550123, +447700900123",
     validate: (value) => {
-      const raw = String(value ?? "").trim();
+      const raw = value.trim();
       if (!raw) {
         return "Required";
       }
@@ -326,7 +326,7 @@ async function promptWhatsAppDmAccess(params: {
     },
   });
 
-  const parsed = parseWhatsAppAllowFromEntries(String(allowRaw));
+  const parsed = parseWhatsAppAllowFromEntries(allowRaw);
   return setWhatsAppAllowFrom(next, accountId, parsed.entries);
 }