diff --git a/packages/stack/src/blockchain/blockchain-electrum.ts b/packages/stack/src/blockchain/blockchain-electrum.ts
index 65bd1ec..9e3eeee 100644
--- a/packages/stack/src/blockchain/blockchain-electrum.ts
+++ b/packages/stack/src/blockchain/blockchain-electrum.ts
@@ -480,7 +480,7 @@ export class BlockchainElectrum extends BaseBlockchain<
     // If there are no more callbacks, remove the address entry
     // and potentially unsubscribe from blockchain updates
     if (callbacks.size === 0) {
-      this.transactionSubscriptions.delete(address);
+      this.addressSubscriptions.delete(address);
 
       await this.electrumClient.unsubscribe(
         'blockchain.address.unsubscribe',
diff --git a/packages/stack/src/utils/expontential-backoff.ts b/packages/stack/src/utils/exponential-backoff.ts
similarity index 100%
rename from packages/stack/src/utils/expontential-backoff.ts
rename to packages/stack/src/utils/exponential-backoff.ts
diff --git a/packages/stack/src/utils/index.ts b/packages/stack/src/utils/index.ts
index c372534..8a554a3 100644
--- a/packages/stack/src/utils/index.ts
+++ b/packages/stack/src/utils/index.ts
@@ -1,5 +1,5 @@
 export * from './event-emitter.js';
-export * from './expontential-backoff.js';
+export * from './exponential-backoff.js';
 export * from './ext-error.js';
 export * from './inverse-bloom-filter.js';
 export * from './memoizer.js';
diff --git a/packages/stack/src/utils/sse-session.ts b/packages/stack/src/utils/sse-session.ts
index 2c3d854..a37dd3f 100644
--- a/packages/stack/src/utils/sse-session.ts
+++ b/packages/stack/src/utils/sse-session.ts
@@ -1,4 +1,4 @@
-import { ExponentialBackoff } from './expontential-backoff.js';
+import { ExponentialBackoff } from './exponential-backoff.js';
 
 /**
  * A Server-Sent Events client implementation using fetch API.