diff --git a/packages/core/core/src/engine.ts b/packages/core/core/src/engine.ts
index 5b7ce758a..c173814b3 100644
--- a/packages/core/core/src/engine.ts
+++ b/packages/core/core/src/engine.ts
@@ -205,7 +205,7 @@ export class Engine {
 
       if (this.plugins) {
         const plugin = this.plugins.createPlugin('coreservicesplugin', {});
-        plugin.registerActionForEvent("embark:engine:started", undefined, (_params, cb) => {
+        plugin.registerActionForEvent("embark:engine:started", (_params, cb) => {
           this.servicesMonitor && this.servicesMonitor.startMonitor();
           cb();
         });
diff --git a/packages/plugins/accounts-manager/src/index.ts b/packages/plugins/accounts-manager/src/index.ts
index a3de28e59..a4229149b 100644
--- a/packages/plugins/accounts-manager/src/index.ts
+++ b/packages/plugins/accounts-manager/src/index.ts
@@ -22,7 +22,7 @@ export default class AccountsManager {
       this._web3 = null;
     });
 
-    this.embark.registerActionForEvent("tests:config:updated", undefined, async (params, cb) => {
+    this.embark.registerActionForEvent("tests:config:updated", async (params, cb) => {
       // reset accounts backing variable as the accounts in config may have changed and
       // web.eth.getAccounts may return a different value now
       this._accounts = null;
diff --git a/packages/plugins/rpc-manager/src/lib/eth_accounts.ts b/packages/plugins/rpc-manager/src/lib/eth_accounts.ts
index 56c5114ea..463d0f246 100644
--- a/packages/plugins/rpc-manager/src/lib/eth_accounts.ts
+++ b/packages/plugins/rpc-manager/src/lib/eth_accounts.ts
@@ -21,7 +21,7 @@ export default class EthAccounts extends RpcModifier {
   constructor(embark: Embark, rpcModifierEvents: Events) {
     super(embark, rpcModifierEvents);
 
-    this.embark.registerActionForEvent("blockchain:proxy:response", undefined, this.checkResponseFor_eth_accounts.bind(this));
+    this.embark.registerActionForEvent("blockchain:proxy:response", this.checkResponseFor_eth_accounts.bind(this));
   }
 
   private async checkResponseFor_eth_accounts(params: any, callback: Callback<any>) {
diff --git a/packages/plugins/rpc-manager/src/lib/eth_sendTransaction.ts b/packages/plugins/rpc-manager/src/lib/eth_sendTransaction.ts
index c93626c98..6456b4fec 100644
--- a/packages/plugins/rpc-manager/src/lib/eth_sendTransaction.ts
+++ b/packages/plugins/rpc-manager/src/lib/eth_sendTransaction.ts
@@ -11,7 +11,7 @@ export default class EthSendTransaction extends RpcModifier {
   constructor(embark: Embark, rpcModifierEvents: Events) {
     super(embark, rpcModifierEvents);
 
-    embark.registerActionForEvent("blockchain:proxy:request", undefined, this.checkRequestFor_eth_sendTransaction.bind(this));
+    embark.registerActionForEvent("blockchain:proxy:request", this.checkRequestFor_eth_sendTransaction.bind(this));
 
     // Allow to run transaction in parallel by resolving the nonce manually.
     // For each transaction, resolve the nonce by taking the max of current transaction count and the cache we keep locally.
diff --git a/packages/plugins/rpc-manager/src/lib/eth_signTypedData.ts b/packages/plugins/rpc-manager/src/lib/eth_signTypedData.ts
index b49afeef4..cb9f73ab8 100644
--- a/packages/plugins/rpc-manager/src/lib/eth_signTypedData.ts
+++ b/packages/plugins/rpc-manager/src/lib/eth_signTypedData.ts
@@ -8,8 +8,8 @@ export default class EthSignTypedData extends RpcModifier {
   constructor(embark: Embark, rpcModifierEvents: Events) {
     super(embark, rpcModifierEvents);
 
-    this.embark.registerActionForEvent("blockchain:proxy:request", undefined, this.checkRequestFor_eth_signTypedData.bind(this));
-    this.embark.registerActionForEvent("blockchain:proxy:response", undefined, this.checkResponseFor_eth_signTypedData.bind(this));
+    this.embark.registerActionForEvent("blockchain:proxy:request", this.checkRequestFor_eth_signTypedData.bind(this));
+    this.embark.registerActionForEvent("blockchain:proxy:response", this.checkResponseFor_eth_signTypedData.bind(this));
   }
 
   private async checkRequestFor_eth_signTypedData(params: any, callback: Callback<any>) {
diff --git a/packages/plugins/rpc-manager/src/lib/personal_newAccount.ts b/packages/plugins/rpc-manager/src/lib/personal_newAccount.ts
index cd35f81e0..a12304cf0 100644
--- a/packages/plugins/rpc-manager/src/lib/personal_newAccount.ts
+++ b/packages/plugins/rpc-manager/src/lib/personal_newAccount.ts
@@ -7,7 +7,7 @@ export default class PersonalNewAccount extends RpcModifier {
   constructor(embark: Embark, rpcModifierEvents: Events) {
     super(embark, rpcModifierEvents);
 
-    embark.registerActionForEvent("blockchain:proxy:response", undefined, this.checkResponseFor_personal_newAccount.bind(this));
+    embark.registerActionForEvent("blockchain:proxy:response", this.checkResponseFor_personal_newAccount.bind(this));
   }
 
   private async checkResponseFor_personal_newAccount(params: any, callback: Callback<any>) {