diff --git a/src/__tests__/terminalCloudAPI.spec.ts b/src/__tests__/terminalCloudAPI.spec.ts
index 33b2c8a..a780602 100644
--- a/src/__tests__/terminalCloudAPI.spec.ts
+++ b/src/__tests__/terminalCloudAPI.spec.ts
@@ -34,6 +34,7 @@ beforeEach((): void => {
         nock.activate();
     }
     client = createClient(process.env.ADYEN_TERMINAL_APIKEY);
+    client.config.merchantAccount = process.env.ADYEN_TERMINAL_MERCHANT;
 
     terminalCloudAPI = new TerminalCloudAPI(client);
     scope = nock(`${client.config.terminalApiCloudEndpoint}`);
diff --git a/src/config.ts b/src/config.ts
index 6a4971b..f8ceb40 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -19,6 +19,7 @@
 interface ConfigConstructor {
     username?: string;
     password?: string;
+    merchantAccount?: string;
     environment?: Environment;
     endpoint?: string;
     marketPayEndpoint?: string;
@@ -38,6 +39,7 @@ interface ConfigConstructor {
 class Config {
     public username?: string;
     public password?: string;
+    public merchantAccount?: string;
     public environment?: Environment;
     public endpoint?: string;
     public marketPayEndpoint?: string;
@@ -59,6 +61,7 @@ class Config {
     public constructor(options: ConfigConstructor = {}) {
         if (options.username) this.username = options.username;
         if (options.password) this.password = options.password;
+        if (options.merchantAccount) this.merchantAccount = options.merchantAccount;
         if (options.environment) this.environment = options.environment;
         if (options.endpoint) this.endpoint = options.endpoint;
         if (options.marketPayEndpoint) this.marketPayEndpoint = options.marketPayEndpoint;