diff --git a/src/commonPoW.js b/src/commonPoW.js
deleted file mode 100644
index 03598029c..000000000
--- a/src/commonPoW.js
+++ /dev/null
@@ -1,36 +0,0 @@
-/* global NimiqPoW */
-/* global CONFIG */
-/* global Constants */
-/* global Errors */
-
-/** @type {Promise<void>?} */
-let __nimiqPoWLoaded = null;
-
-/**
- * Singleton promise
- *
- * @returns {Promise<void>}
- */
-async function loadNimiqPow() { // eslint-disable-line no-unused-vars
-    // eslint-disable-next-line no-return-assign
-    return __nimiqPoWLoaded || (__nimiqPoWLoaded = new Promise(async resolve => {
-        // Load web assembly encryption library into browser (if supported)
-        await NimiqPoW.WasmHelper.doImport();
-
-        switch (CONFIG.NETWORK) {
-            case Constants.NETWORK.DEV:
-                NimiqPoW.GenesisConfig.dev();
-                break;
-            case Constants.NETWORK.TEST:
-                NimiqPoW.GenesisConfig.test();
-                break;
-            case Constants.NETWORK.MAIN:
-                NimiqPoW.GenesisConfig.main();
-                break;
-            default:
-                throw new Errors.InvalidNetworkConfig();
-        }
-
-        resolve();
-    }));
-}
diff --git a/src/request/sign-staking/SignStaking.js b/src/request/sign-staking/SignStaking.js
index ebd373369..3fb3f370e 100644
--- a/src/request/sign-staking/SignStaking.js
+++ b/src/request/sign-staking/SignStaking.js
@@ -136,9 +136,7 @@ class SignStaking {
             return;
         }
 
-        const powPrivateKey = key.derivePrivateKey(request.keyPath);
-
-        const privateKey = Nimiq.PrivateKey.deserialize(powPrivateKey.serialize());
+        const privateKey = key.derivePrivateKey(request.keyPath);
         const keyPair = Nimiq.KeyPair.derive(privateKey);
 
         const results = request.transactions.map(transaction => {
diff --git a/src/request/sign-transaction/SignTransaction.js b/src/request/sign-transaction/SignTransaction.js
index abbbb250a..3a646b049 100644
--- a/src/request/sign-transaction/SignTransaction.js
+++ b/src/request/sign-transaction/SignTransaction.js
@@ -182,9 +182,7 @@ class SignTransaction {
             return;
         }
 
-        const powPrivateKey = key.derivePrivateKey(request.keyPath);
-
-        const privateKey = Nimiq.PrivateKey.deserialize(powPrivateKey.serialize());
+        const privateKey = key.derivePrivateKey(request.keyPath);
         const keyPair = Nimiq.KeyPair.derive(privateKey);
 
         /** @type {Nimiq.Transaction} */