diff --git a/lib/core/singleton.js b/lib/core/singleton.js
index f327fcb0af..d0b9c29e27 100644
--- a/lib/core/singleton.js
+++ b/lib/core/singleton.js
@@ -34,7 +34,7 @@ class Singleton {
       return;
     }
 
-    // multi clent, use app[name].getInstance(id)
+    // multi client, use app[name].getInstance(id)
     if (options.clients) {
       Object.keys(options.clients).forEach(id => {
         const client = this.createInstance(options.clients[id], id);
@@ -61,7 +61,7 @@ class Singleton {
       return;
     }
 
-    // multi clent, use app[name].getInstance(id)
+    // multi client, use app[name].getInstance(id)
     if (options.clients) {
       await Promise.all(Object.keys(options.clients).map(id => {
         return this.createInstanceAsync(options.clients[id], id)