diff --git a/web/shared-worker/worker/worker-crypto.js b/web/shared-worker/worker/worker-crypto.js
--- a/web/shared-worker/worker/worker-crypto.js
+++ b/web/shared-worker/worker/worker-crypto.js
@@ -250,11 +250,6 @@
     throw new Error('Database not initialized');
   }
 
-  // This `olm.Account` is created once and is cached for the entire
-  // program lifetime. Freeing is done as part of `clearCryptoStore`.
-  const account = new olm.Account();
-  let picklingKey;
-
   let accountDBString;
   try {
     accountDBString =
@@ -288,6 +283,11 @@
     };
   }
 
+  // This `olm.Account` is created once and is cached for the entire
+  // program lifetime. Freeing is done as part of `clearCryptoStore`.
+  const account = new olm.Account();
+  let picklingKey;
+
   if (accountDBString.isNull) {
     picklingKey = uuid.v4();
     account.create();
@@ -526,6 +526,8 @@
     };
 
     await persistCryptoStore(notifsCryptoAccount);
+
+    notifsCryptoAccount.notificationAccount.free();
   },
   async getUserPublicKey(): Promise<ClientPublicKeys> {
     if (!cryptoStore) {