diff --git a/web/packages/shared/components/VerifyMasterPasswordForm.tsx b/web/packages/shared/components/VerifyMasterPasswordForm.tsx
index 7c4ee05ea..9e39ba252 100644
--- a/web/packages/shared/components/VerifyMasterPasswordForm.tsx
+++ b/web/packages/shared/components/VerifyMasterPasswordForm.tsx
@@ -11,7 +11,7 @@ import type { KeyAttributes, User } from "../user/types";
 
 export interface VerifyMasterPasswordFormProps {
     user: User;
-    keyAttributes: KeyAttributes;
+    keyAttributes: KeyAttributes | undefined;
     callback: (
         key: string,
         kek: string,
@@ -48,14 +48,15 @@ export default function VerifyMasterPasswordForm({
                         srpAttributes.opsLimit,
                         srpAttributes.memLimit,
                     );
-                } else {
+                } else if (keyAttributes) {
                     kek = await cryptoWorker.deriveKey(
                         passphrase,
                         keyAttributes.kekSalt,
                         keyAttributes.opsLimit,
                         keyAttributes.memLimit,
                     );
-                }
+                } else
+                    throw new Error("Both SRP and key attributes are missing");
             } catch (e) {
                 log.error("failed to derive key", e);
                 throw Error(CustomError.WEAK_DEVICE);