diff --git a/apps/logicsrc-web/src/lib/coinpay.ts b/apps/logicsrc-web/src/lib/coinpay.ts
index 64343b7..96bc58f 100644
--- a/apps/logicsrc-web/src/lib/coinpay.ts
+++ b/apps/logicsrc-web/src/lib/coinpay.ts
@@ -117,7 +117,7 @@ export function verifyCoinPayWebhook(
     const parts = signatureHeader.split(",").map((part) => part.trim());
     const timestamp = parts.find((part) => part.startsWith("t="))?.slice(2);
     const signature = parts.find((part) => part.startsWith("v1="))?.slice(3);
-    if (!timestamp || !/^[0-9a-fA-F]{64}$/.test(signature)) {
+    if (!timestamp || !signature || !/^[0-9a-fA-F]{64}$/.test(signature)) {
       return false;
     }