diff --git a/lib/IAMClient.js b/lib/IAMClient.js
index 66f98b3..66c65cf 100644
--- a/lib/IAMClient.js
+++ b/lib/IAMClient.js
@@ -343,7 +343,7 @@ class VaultClient {
 
         if (accountName) {
             assert(!this.parameterValidation || typeof accountName === 'string',
-            'the account name, if set, should be a string');
+                'the account name, if set, should be a string');
             data.AccountName = accountName;
         }
         this.request('POST', '/', true, callback, data);