diff --git a/bindings/java/src/org/hyperic/sigar/cmd/Mx.java b/bindings/java/src/org/hyperic/sigar/cmd/Mx.java
index 07ce94e4..0fb5271a 100644
--- a/bindings/java/src/org/hyperic/sigar/cmd/Mx.java
+++ b/bindings/java/src/org/hyperic/sigar/cmd/Mx.java
@@ -71,7 +71,7 @@ public class Mx extends SigarCommandBase {
         SigarRegistry registry = new SigarRegistry(this.proxy);
         try {
             server.registerMBean(registry, null);
-            SigarProcess proc = new SigarProcess();
+            SigarProcess proc = new SigarProcess(this.sigar);
             server.registerMBean(proc, new ObjectName(proc.getObjectName()));
             isRegistered = true;
         } catch (Exception e) {
diff --git a/bindings/java/src/org/hyperic/sigar/jmx/SigarProcess.java b/bindings/java/src/org/hyperic/sigar/jmx/SigarProcess.java
index 2690566d..1af9a22e 100644
--- a/bindings/java/src/org/hyperic/sigar/jmx/SigarProcess.java
+++ b/bindings/java/src/org/hyperic/sigar/jmx/SigarProcess.java
@@ -40,16 +40,18 @@ public class SigarProcess implements SigarProcessMBean {
     private long pid = -1;
 
     public SigarProcess() {
-        this(new Sigar());
-    }
-
-    public SigarProcess(Sigar sigar) {
-        this.sigarImpl = sigar;
+        this.sigarImpl = new Sigar();
         this.sigar = SigarProxyCache.newInstance(sigarImpl);
     }
 
+    public SigarProcess(SigarProxy sigar) {
+        this.sigar = sigar;
+    }
+
     public void close() {
-        this.sigarImpl.close();
+        if (this.sigarImpl != null) {
+            this.sigarImpl.close();
+        }
     }
 
     private RuntimeException unexpectedError(String type,