diff --git a/src/nlsr_npl.hpp b/src/nlsr_npl.hpp
index 47bb8f5..3fc3db9 100644
--- a/src/nlsr_npl.hpp
+++ b/src/nlsr_npl.hpp
@@ -5,33 +5,35 @@
 #include<string>
 #include <ndn-cpp-dev/face.hpp>
 
-namespace nlsr {
+namespace nlsr
+{
 
-using namespace std;
+    using namespace std;
 
-class Npl{
-	
-public:
-	Npl();
-	~Npl();
+    class Npl
+    {
 
-	int insertIntoNpl(string& name);
-	int removeFromNpl(string& name);
-	void sortNpl();
-	int getNplSize()
-	{
-		return nameList.size();
-	}
-	std::list<string>& getNameList()
-	{
-		return nameList;
-	}
-	void printNpl();
+    public:
+        Npl();
+        ~Npl();
 
-private:
-	std::list<string> nameList;
+        int insertIntoNpl(string& name);
+        int removeFromNpl(string& name);
+        void sortNpl();
+        int getNplSize()
+        {
+            return nameList.size();
+        }
+        std::list<string>& getNameList()
+        {
+            return nameList;
+        }
+        void printNpl();
 
-};
+    private:
+        std::list<string> nameList;
+
+    };
 
 }//namespace nlsr