diff --git a/src/gpu/VirtualFluids_GPU/Communication/Communicator.h b/src/gpu/VirtualFluids_GPU/Communication/Communicator.h
index 72c4a136ece03098c10ea65493ba02a0109ed95d..dbb36474106f3a4b2701719a6a7326f1af4a659a 100644
--- a/src/gpu/VirtualFluids_GPU/Communication/Communicator.h
+++ b/src/gpu/VirtualFluids_GPU/Communication/Communicator.h
@@ -30,53 +30,53 @@ namespace gpu
 class VIRTUALFLUIDS_GPU_EXPORT Communicator
 {
 public:
-	static Communicator* getInstanz();
-	static Communicator* getInstanz(const int numberOfProcs);
-	void exchngBottomToTop(float* sbuf, float* rbuf, int count);
-	void exchngTopToBottom(float* sbuf, float* rbuf, int count);
-   void waitAll();
-   void distributeGeometry(unsigned int* dataRoot, unsigned int* dataNode, int dataSizePerNode);
-	int getPID() const;
-	int getNummberOfProcess() const;
-	int getNeighbourTop();
-	int getNeighbourBottom();
-   void exchngData(float* sbuf_t, float* rbuf_t, float* sbuf_b, float* rbuf_b, int count);
-   void exchngDataNB(float* sbuf_t, int count_st, float* rbuf_t, int count_rt, float* sbuf_b, int count_sb, float* rbuf_b, int count_rb);
-   //////////////////////////////////////////////////////////////////////////
-   void exchngDataGPU(real* sbuf, int count_s, real* rbuf, int count_r, int nb_rank);
-   void sendRecvGPU(real* sbuf, int count_s, real* rbuf, int count_r, int nb_rank);
-   void nbRecvDataGPU( real* rbuf, int count_r, int nb_rank );
-   void nbSendDataGPU( real* sbuf, int count_s, int nb_rank );
-   void waitallGPU();
-   void sendDataGPU( real* sbuf, int count_s, int nb_rank );
-   void waitGPU(int id);
-   void resetRequest();
-   void barrierGPU();
-   void barrier();
-   //////////////////////////////////////////////////////////////////////////
-   void exchngDataGeo(int* sbuf_t, int* rbuf_t, int* sbuf_b, int* rbuf_b, int count);
-	MPI_Comm getCommunicator();
-	void startTimer();
-	void stopTimer();
-	double getTime();
-	int mapCudaDevice(const int &rank, const int &size, const std::vector<unsigned int> &devices, const int &maxdev);
+    static Communicator* getInstanz();
+    static Communicator* getInstanz(const int numberOfProcs);
+    void exchngBottomToTop(float* sbuf, float* rbuf, int count);
+    void exchngTopToBottom(float* sbuf, float* rbuf, int count);
+    void waitAll();
+    void distributeGeometry(unsigned int* dataRoot, unsigned int* dataNode, int dataSizePerNode);
+    int getPID() const;
+    int getNummberOfProcess() const;
+    int getNeighbourTop();
+    int getNeighbourBottom();
+    void exchngData(float* sbuf_t, float* rbuf_t, float* sbuf_b, float* rbuf_b, int count);
+    void exchngDataNB(float* sbuf_t, int count_st, float* rbuf_t, int count_rt, float* sbuf_b, int count_sb, float* rbuf_b, int count_rb);
+    //////////////////////////////////////////////////////////////////////////
+    void exchngDataGPU(real* sbuf, int count_s, real* rbuf, int count_r, int nb_rank);
+    void sendRecvGPU(real* sbuf, int count_s, real* rbuf, int count_r, int nb_rank);
+    void nbRecvDataGPU( real* rbuf, int count_r, int nb_rank );
+    void nbSendDataGPU( real* sbuf, int count_s, int nb_rank );
+    void waitallGPU();
+    void sendDataGPU( real* sbuf, int count_s, int nb_rank );
+    void waitGPU(int id);
+    void resetRequest();
+    void barrierGPU();
+    void barrier();
+    //////////////////////////////////////////////////////////////////////////
+    void exchngDataGeo(int* sbuf_t, int* rbuf_t, int* sbuf_b, int* rbuf_b, int count);
+    MPI_Comm getCommunicator();
+    void startTimer();
+    void stopTimer();
+    double getTime();
+    int mapCudaDevice(const int &rank, const int &size, const std::vector<unsigned int> &devices, const int &maxdev);
 protected:
 private:
-   static Communicator* instanz;
-   int numprocs, PID;
-   int nbrbottom, nbrtop; 
-   MPI_Comm comm1d, commGPU;
-   MPI_Status status[4];
-   MPI_Request request[4];
-   //////////////////////////////////////////////////////////////////////////
-   std::vector<MPI_Request> requestGPU;
-   int rcount;
-   //////////////////////////////////////////////////////////////////////////
-   double starttime;
-   double endtime;
-   Communicator();
-   Communicator(const int numberOfProcs);
-   Communicator(const Communicator&);
+     static Communicator* instanz;
+     int numprocs, PID;
+     int nbrbottom, nbrtop; 
+     MPI_Comm comm1d, commGPU;
+     MPI_Status status[4];
+     MPI_Request request[4];
+     //////////////////////////////////////////////////////////////////////////
+     std::vector<MPI_Request> requestGPU;
+     int rcount;
+     //////////////////////////////////////////////////////////////////////////
+     double starttime;
+     double endtime;
+     Communicator();
+     Communicator(const int numberOfProcs);
+     Communicator(const Communicator&);
 };
 
 } // namespace GPU