diff --git a/java/meterpreter/meterpreter/src/main/java/com/metasploit/meterpreter/Utils.java b/java/meterpreter/meterpreter/src/main/java/com/metasploit/meterpreter/Utils.java
index a4d6ddf3..2270b144 100644
--- a/java/meterpreter/meterpreter/src/main/java/com/metasploit/meterpreter/Utils.java
+++ b/java/meterpreter/meterpreter/src/main/java/com/metasploit/meterpreter/Utils.java
@@ -17,13 +17,13 @@ public class Utils {
     public static String runCommand(String command) throws IOException {
         Process process = Runtime.getRuntime().exec(command);
         BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream()));
-        StringBuilder stringBuffer = new StringBuilder();
+        StringBuilder stringBuilder = new StringBuilder();
         String line;
         while ((line = br.readLine()) != null) {
-            stringBuffer.append(line);
-            stringBuffer.append('\n');
+            stringBuilder.append(line);
+            stringBuilder.append('\n');
         }
-        return stringBuffer.toString();
+        return stringBuilder.toString();
     }
 
     public static String getHostname() {
diff --git a/java/meterpreter/meterpreter/src/main/java/com/metasploit/meterpreter/core/core_machine_id.java b/java/meterpreter/meterpreter/src/main/java/com/metasploit/meterpreter/core/core_machine_id.java
index f38349de..810a575c 100644
--- a/java/meterpreter/meterpreter/src/main/java/com/metasploit/meterpreter/core/core_machine_id.java
+++ b/java/meterpreter/meterpreter/src/main/java/com/metasploit/meterpreter/core/core_machine_id.java
@@ -17,11 +17,9 @@ public class core_machine_id implements Command {
     private static String machine_id;
 
     private String getSerial() throws IOException {
-        StringBuilder stringBuffer = new StringBuilder();
-        stringBuffer.append(Utils.runCommand("getprop ro.serialno").trim());
-        stringBuffer.append(Utils.runCommand("getprop ro.product.brand").trim());
-        stringBuffer.append(Utils.runCommand("getprop ro.product.model").trim());
-        return stringBuffer.toString();
+        return Utils.runCommand("getprop ro.serialno").trim() +
+                Utils.runCommand("getprop ro.product.brand").trim() +
+                Utils.runCommand("getprop ro.product.model").trim();
     }
 
     private String getHDLabel() {