diff --git a/lib/agent.js b/lib/agent.js
index 3074bb3..21c19e9 100644
--- a/lib/agent.js
+++ b/lib/agent.js
@@ -40,6 +40,31 @@ AgentMIBDecor.prototype.instancePossible = function () {
 	return (this._scalar || this._column);
 };
 
+function
+Agent(options)
+{
+	var self = this;
+
+	Listener.call(this, options);
+
+	if (typeof (options.dtrace) !== 'object')
+		throw new TypeError('options.dtrace (object) is required');
+
+	this._dtrace = options.dtrace;
+
+	Object.keys(AGENT_PROBES).forEach(function (p) {
+		var args = AGENT_PROBES[p].splice(0);
+		args.unshift(p);
+
+		self._dtrace.addProbe.apply(self._dtrace, args);
+	});
+
+	this._dtrace.enable();
+
+	this._mib = new MIB();
+}
+util.inherits(Agent, Listener);
+
 Agent.prototype._add_provider = function _add_provider(prov) {
 	var self = this;
 	var decor;
@@ -84,31 +109,6 @@ Agent.prototype.addProviders = function addProviders(prov) {
 	}
 };
 
-function
-Agent(options)
-{
-	var self = this;
-
-	Listener.call(this, options);
-
-	if (typeof (options.dtrace) !== 'object')
-		throw new TypeError('options.dtrace (object) is required');
-
-	this._dtrace = options.dtrace;
-
-	Object.keys(AGENT_PROBES).forEach(function (p) {
-		var args = AGENT_PROBES[p].splice(0);
-		args.unshift(p);
-
-		self._dtrace.addProbe.apply(self._dtrace, args);
-	});
-
-	this._dtrace.enable();
-
-	this._mib = new MIB();
-}
-util.inherits(Agent, Listener);
-
 /*
  * The provider is expected to provide one of three things for each iteration
  * requested of it:
diff --git a/snmpget.js b/snmpget.js
index 79603bf..6ad3034 100644
--- a/snmpget.js
+++ b/snmpget.js
@@ -24,5 +24,5 @@ var oid = process.argv[4];
 
 client.get(ip, community, 0, oid, function (snmpmsg) {
 	print_get_response(snmpmsg);
-	client.unref();
+	client.close();
 });
diff --git a/snmpset.js b/snmpset.js
index 077217b..85d8f69 100644
--- a/snmpset.js
+++ b/snmpset.js
@@ -20,5 +20,5 @@ client.set(ip, community, 0, oid, snmp.data.createData({ type: 'Integer',
 value: parseInt(value, 10) }), function (snmpmsg) {
 	// console.log(snmp.pdu.strerror(snmpmsg.pdu.error_status));
 	process.exitCode = snmpmsg.pdu.error_status;
-	client.unref();
+	client.close();
 });
diff --git a/snmptrap.js b/snmptrap.js
index 7c1067c..9d7a69f 100644
--- a/snmptrap.js
+++ b/snmptrap.js
@@ -14,7 +14,7 @@ if ('snmpinform' == path.basename(process.argv[1]).split('.')[0])
 		console.log(util.inspect(snmp.message.serializer(snmpmsg),
 				false, null, true));
 		process.exitCode = snmpmsg.pdu.error_status;
-		client.unref();
+		client.close();
 	};
 
 var client = snmp.createClient({
diff --git a/snmpwalk.js b/snmpwalk.js
index 53e89d2..d6f0d8f 100644
--- a/snmpwalk.js
+++ b/snmpwalk.js
@@ -41,5 +41,5 @@ var community = process.argv[3];
 var oid = process.argv[4];
 
 snmpwalk(ip, community, 0, oid, print_get_response, function () {
-	client.unref();
+	client.close();
 });