diff --git a/lib/index.js b/lib/index.js
index 24e6dcc..0b362c9 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -323,14 +323,21 @@ client.onConnect(() => {
     }
   }, pingInterval);
   let lastForceUpdateTime = new Date();
+  let tempClient;
   setInterval(async () => {
+    if (tempClient) {
+      tempClient.close().catch(e => {
+        console.error('Close temp client error:', e);
+      });
+    }
+
     let tempIdentifier = _nknSdk.default.util.randomBytesHex(4);
 
     if (identifier) {
       tempIdentifier += '.' + identifier;
     }
 
-    let tempClient = new _nknSdk.default.MultiClient({
+    tempClient = new _nknSdk.default.MultiClient({
       originalClient: true,
       seed: wallet.getSeed(),
       identifier: tempIdentifier
@@ -356,6 +363,11 @@ client.onConnect(() => {
             }
           }
         }
+
+        tempClient.close().catch(e => {
+          console.error('Close temp client error:', e);
+        });
+        tempClient = null;
       }, 3000);
     });
   }, forcePingInterval);
diff --git a/package.json b/package.json
index a9da361..50f2948 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "nkn-shell-daemon",
-  "version": "1.0.7",
+  "version": "1.0.9",
   "description": "NKN Shell Daemon",
   "main": "nshd.js",
   "bin": {
diff --git a/src/index.js b/src/index.js
index 8891d02..72ab327 100644
--- a/src/index.js
+++ b/src/index.js
@@ -303,12 +303,18 @@ client.onConnect(() => {
   }, pingInterval)
 
   let lastForceUpdateTime = new Date()
+  let tempClient
   setInterval(async () => {
+    if (tempClient) {
+      tempClient.close().catch((e) => {
+        console.error('Close temp client error:', e);
+      })
+    }
     let tempIdentifier = nkn.util.randomBytesHex(4)
     if (identifier) {
       tempIdentifier += '.' + identifier
     }
-    let tempClient = new nkn.MultiClient({
+    tempClient = new nkn.MultiClient({
       originalClient: true,
       seed: wallet.getSeed(),
       identifier: tempIdentifier,
@@ -331,6 +337,10 @@ client.onConnect(() => {
             }
           }
         }
+        tempClient.close().catch((e) => {
+          console.error('Close temp client error:', e);
+        })
+        tempClient = null
       }, 3000);
     })
   }, forcePingInterval)