diff --git a/WindowsMonitor/Native/Common.cpp b/WindowsMonitor/Native/Common.cpp
index 1730984e..b913c7f0 100644
--- a/WindowsMonitor/Native/Common.cpp
+++ b/WindowsMonitor/Native/Common.cpp
@@ -1,17 +1,26 @@
 #include "stdafx.h"
 #include <jni.h>
 
-char * GetJString(JNIEnv * environment, jstring jstr)
+char * GetJString(JNIEnv * environment, jstring str)
 {
-	jsize length = environment->GetStringLength(jstr);
-	const jchar * jcstr = environment->GetStringChars( jstr, NULL );
+	jsize length=environment->GetStringLength(str);
+	const jchar * jcstr=environment->GetStringChars(str,NULL);
 	int size=0;
-	char *str=(char *)malloc(length*2+1);
-	if((size=WideCharToMultiByte(CP_ACP,0,LPCWSTR(jcstr),length,str,length*2+1,NULL,NULL))==0)
+	char * ret=(char *)malloc(length*2+1);
+	if((size=WideCharToMultiByte(CP_ACP,0,LPCWSTR(jcstr),length,ret,length*2+1,NULL,NULL))==0)
 	{
 		return NULL;
 	}
-	environment->ReleaseStringChars(jstr,jcstr);
-	str[size] = 0;
-	return str;
+	environment->ReleaseStringChars(str,jcstr);
+	ret[size]='\0';
+	return ret;
+}
+
+char * GetUTF8String(const wchar_t * str)
+{
+	int length=WideCharToMultiByte(CP_UTF8,NULL,str,(long)wcslen(str),NULL,0,NULL,NULL);
+	char * ret=new char[length + 1];
+	WideCharToMultiByte(CP_UTF8,NULL,str,(long)wcslen(str),ret,length,NULL,NULL);
+	ret[length]='\0';
+	return ret;
 }
\ No newline at end of file
diff --git a/WindowsMonitor/Native/Common.h b/WindowsMonitor/Native/Common.h
index 147804d7..7697271f 100644
--- a/WindowsMonitor/Native/Common.h
+++ b/WindowsMonitor/Native/Common.h
@@ -2,4 +2,5 @@
 
 #include <jni.h>
 
-char * GetJString(JNIEnv * environment, jstring jstr);
\ No newline at end of file
+char * GetJString(JNIEnv * environment, jstring jstr);
+char * GetUTF8String(const wchar_t * str);
\ No newline at end of file
diff --git a/WindowsMonitor/Native/LogicalDiskMonitor.cpp b/WindowsMonitor/Native/LogicalDiskMonitor.cpp
index 42988abc..91ad09d3 100644
--- a/WindowsMonitor/Native/LogicalDiskMonitor.cpp
+++ b/WindowsMonitor/Native/LogicalDiskMonitor.cpp
@@ -14,7 +14,7 @@ JNIEXPORT jobjectArray JNICALL Java_org_bench4q_monitor_performance_windows_Logi
 	for(iter=instances.begin();iter!=instances.end();iter++)
 	{
 		environment->SetObjectArrayElement(array,i
-			,environment->NewStringUTF(Common::WideStringToString(*iter).c_str()));
+			,environment->NewStringUTF(GetUTF8String((*iter).c_str())));
 		i++;
 	}
 	return array;
@@ -32,7 +32,7 @@ JNIEXPORT jobjectArray JNICALL Java_org_bench4q_monitor_performance_windows_Logi
 	for(iter=counterList.begin();iter!=counterList.end();iter++)
 	{
 		environment->SetObjectArrayElement(array,i
-			,environment->NewStringUTF(Common::WideStringToString(*iter).c_str()));
+			,environment->NewStringUTF(GetUTF8String((*iter).c_str())));
 		i++;
 	}
 	return array;
diff --git a/WindowsMonitor/Native/MemoryMonitor.cpp b/WindowsMonitor/Native/MemoryMonitor.cpp
index bda16258..657a5511 100644
--- a/WindowsMonitor/Native/MemoryMonitor.cpp
+++ b/WindowsMonitor/Native/MemoryMonitor.cpp
@@ -1,5 +1,6 @@
 #include "stdafx.h"
 #include "MemoryMonitor.h"
+#include "Common.h"
 
 JNIEXPORT jobjectArray JNICALL Java_org_bench4q_monitor_performance_windows_MemoryMonitor_getCounterList
 	(JNIEnv * environment, jobject object)
@@ -13,7 +14,7 @@ JNIEXPORT jobjectArray JNICALL Java_org_bench4q_monitor_performance_windows_Memo
 	for(iter=counterList.begin();iter!=counterList.end();iter++)
 	{
 		environment->SetObjectArrayElement(array,i
-			,environment->NewStringUTF(Common::WideStringToString(*iter).c_str()));
+			,environment->NewStringUTF(GetUTF8String((*iter).c_str())));
 		i++;
 	}
 	return array;
diff --git a/WindowsMonitor/Native/NetworkInterfaceMonitor.cpp b/WindowsMonitor/Native/NetworkInterfaceMonitor.cpp
index 2139a8f5..ffaa2db9 100644
--- a/WindowsMonitor/Native/NetworkInterfaceMonitor.cpp
+++ b/WindowsMonitor/Native/NetworkInterfaceMonitor.cpp
@@ -14,7 +14,7 @@ JNIEXPORT jobjectArray JNICALL Java_org_bench4q_monitor_performance_windows_Netw
 	for(iter=instances.begin();iter!=instances.end();iter++)
 	{
 		environment->SetObjectArrayElement(array,i
-			,environment->NewStringUTF(Common::WideStringToString(*iter).c_str()));
+			,environment->NewStringUTF(GetUTF8String((*iter).c_str())));
 		i++;
 	}
 	return array;
@@ -32,7 +32,7 @@ JNIEXPORT jobjectArray JNICALL Java_org_bench4q_monitor_performance_windows_Netw
 	for(iter=counterList.begin();iter!=counterList.end();iter++)
 	{
 		environment->SetObjectArrayElement(array,i
-			,environment->NewStringUTF(Common::WideStringToString(*iter).c_str()));
+			,environment->NewStringUTF(GetUTF8String((*iter).c_str())));
 		i++;
 	}
 	return array;
diff --git a/src/main/java/org/bench4q/monitor/Main.java b/src/main/java/org/bench4q/monitor/Main.java
index 7bfe7a99..ec6ca8be 100644
--- a/src/main/java/org/bench4q/monitor/Main.java
+++ b/src/main/java/org/bench4q/monitor/Main.java
@@ -76,7 +76,7 @@ public class Main {
 		for (String elem : networkInterfaceInstances) {
 			System.out.println(elem);
 			System.out.println("bandwidth:"
-					+ networkInterfaceMonitor.getCurrentBandwidth("Broadcom 802.11n ÍøÂçÊÊÅäÆ÷"));
+					+ networkInterfaceMonitor.getCurrentBandwidth(elem));
 		}
 
 		// String[] networkInterfaceCounter = networkInterfaceMonitor