diff --git a/pulsar-client-tools/src/main/java/org/apache/pulsar/admin/cli/PulsarAdminTool.java b/pulsar-client-tools/src/main/java/org/apache/pulsar/admin/cli/PulsarAdminTool.java
index a432b92c94c84..5f0cd58256815 100644
--- a/pulsar-client-tools/src/main/java/org/apache/pulsar/admin/cli/PulsarAdminTool.java
+++ b/pulsar-client-tools/src/main/java/org/apache/pulsar/admin/cli/PulsarAdminTool.java
@@ -80,10 +80,10 @@ public class PulsarAdminTool {
     boolean help;
 
     // for tls with keystore type config
-    boolean useKeyStoreTls = false;
-    String tlsTrustStoreType = "JKS";
-    String tlsTrustStorePath = null;
-    String tlsTrustStorePassword = null;
+    boolean useKeyStoreTls;
+    String tlsTrustStoreType;
+    String tlsTrustStorePath;
+    String tlsTrustStorePassword;
 
     PulsarAdminTool(Properties properties) throws Exception {
         // fallback to previous-version serviceUrl property to maintain backward-compatibility
diff --git a/pulsar-client-tools/src/main/java/org/apache/pulsar/client/cli/PulsarClientTool.java b/pulsar-client-tools/src/main/java/org/apache/pulsar/client/cli/PulsarClientTool.java
index 9d50f70bec982..243bd4b9c316b 100644
--- a/pulsar-client-tools/src/main/java/org/apache/pulsar/client/cli/PulsarClientTool.java
+++ b/pulsar-client-tools/src/main/java/org/apache/pulsar/client/cli/PulsarClientTool.java
@@ -72,15 +72,15 @@ public class PulsarClientTool {
     @Parameter(names = { "-h", "--help", }, help = true, description = "Show this help.")
     boolean help;
 
-    boolean tlsAllowInsecureConnection = false;
-    boolean tlsEnableHostnameVerification = false;
-    String tlsTrustCertsFilePath = null;
+    boolean tlsAllowInsecureConnection;
+    boolean tlsEnableHostnameVerification;
+    String tlsTrustCertsFilePath;
 
     // for tls with keystore type config
-    boolean useKeyStoreTls = false;
-    String tlsTrustStoreType = "JKS";
-    String tlsTrustStorePath = null;
-    String tlsTrustStorePassword = null;
+    boolean useKeyStoreTls;
+    String tlsTrustStoreType;
+    String tlsTrustStorePath;
+    String tlsTrustStorePassword;
 
     JCommander commandParser;
     IUsageFormatter usageFormatter;