diff --git a/src/main.cpp b/src/main.cpp
index 2d10415..204b10d 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -96,19 +96,15 @@ int main(int argc, char *argv[])
                   SR = args.at(++i);
              } else if (arg == "-t" || arg == "--timeWindow" || arg == "-timeWindow") {
                   timeWindow = args.at(++i);
-            } else {
-                 handled = false;
-            }
-         } else {
 #ifdef WITH_CEREBUS
-             if (arg == "-n" || arg == "--stream" || arg == "-stream") {
+             } else if (arg == "-n" || arg == "--stream" || arg == "-stream") {
                  streamMode = true;
-             } else {
 #endif
+             } else {
                  handled = false;
-#ifdef WITH_CEREBUS
              }
-#endif
+         } else {
+             handled = false;
          }
          // Nothing know. Treat it as path.
          if (!handled)
@@ -128,7 +124,16 @@ int main(int argc, char *argv[])
     neuroscope->show();
 #ifdef WITH_CEREBUS
     if (streamMode) {
-        neuroscope->openDocumentStream();
+        if(!file.isEmpty()) {
+            int group = file.toInt();
+            if(group > 0 && group < 6) {
+    		    neuroscope->openNetworkStream(static_cast<CerebusTracesProvider::SamplingGroup>(group));
+            } else {
+                std::cerr << "Sampling group must be between 1 (500 samp/sec) and 5 (30k samp/sec)." << std::endl;
+            }
+        } else {
+            std::cerr << "Network stream mode expects a sampling group as file argument." << std::endl;
+        }
     } else {
 #endif
         if (!file.isEmpty()) {
diff --git a/src/neuroscope.cpp b/src/neuroscope.cpp
index 4057c55..5a9e0ab 100644
--- a/src/neuroscope.cpp
+++ b/src/neuroscope.cpp
@@ -1072,7 +1072,7 @@ void NeuroscopeApp::openDocumentFile(const QString& url)
 }
 
 #ifdef WITH_CEREBUS
-void NeuroscopeApp::openDocumentStream()
+void NeuroscopeApp::openNetworkStream(CerebusTracesProvider::SamplingGroup group)
 {
     slotStatusMsg(tr("Opening stream..."));
 
@@ -1084,7 +1084,7 @@ void NeuroscopeApp::openDocumentStream()
         this->filePath = "cerebus.nsx";
 
         // Open stream
-        if(!doc->openStream()) {
+        if(!doc->openStream(group)) {
             QApplication::restoreOverrideCursor();
             doc->closeDocument();
             resetState();
@@ -1107,7 +1107,9 @@ void NeuroscopeApp::openDocumentStream()
         QApplication::restoreOverrideCursor();
     } else {
         // ToDo: Check if we are already in streaming mode
-        if (!QProcess::startDetached("neuroscope", QStringList() << "-n")) {
+        if (!QProcess::startDetached("neuroscope", QStringList()
+                                                   << "-n"
+                                                   << QString::number(group))) {
             QMessageBox::critical(this, tr("Neuroscope"),tr("neuroscope can not be launch"));
         }
         QApplication::restoreOverrideCursor();
@@ -1326,7 +1328,28 @@ void NeuroscopeApp::slotStreamOpen()
 {
     slotStatusMsg(tr("Opening network stream..."));
 
-    openDocumentStream();
+    // Let user choose sampling rate
+    QStringList items;
+    items << "30 000 Hz" << "10 000 Hz" << "2000 Hz" << "1000 Hz" << "500 Hz";
+
+    CerebusTracesProvider::SamplingGroup mapping[5] = {
+        CerebusTracesProvider::RATE_30k,
+        CerebusTracesProvider::RATE_10k,
+        CerebusTracesProvider::RATE_2K,
+        CerebusTracesProvider::RATE_1K,
+        CerebusTracesProvider::RATE_500
+    };
+
+    bool ok;
+    int answer = items.indexOf(QInputDialog::getItem(0, tr("Network Stream"),
+                                                        tr("Please choose the sampling group to be displayed."),
+                                                        items,
+                                                        0, // current
+                                                        false, //editable
+                                                        &ok));
+
+    if (ok && answer >= 0)
+        openNetworkStream(mapping[answer]);
 
     slotStatusMsg(tr("Ready."));
 }
diff --git a/src/neuroscope.h b/src/neuroscope.h
index 5aec409..0aac273 100644
--- a/src/neuroscope.h
+++ b/src/neuroscope.h
@@ -35,6 +35,11 @@
 //application specific include files
 #include "neuroscopeview.h"
 
+#ifdef WITH_CEREBUS
+    #include "cerebustraceprovider.h" // For SamplingGroup
+#endif
+
+
 // forward declaration of the Neuroscope classes
 class NeuroscopeDoc;
 class PrefDialog;
@@ -72,7 +77,7 @@ class NeuroscopeApp : public QMainWindow
     /** Open a stream, only one document (file or stream) at the time allowed.
     * Asking for a new one will open a new instance of the application with it.
     */
-    void openDocumentStream();
+    void openNetworkStream(CerebusTracesProvider::SamplingGroup group);
 #endif
 
     /** Returns a pointer to the current document connected to the NeuroscopeApp instance and is used by
diff --git a/src/neuroscopedoc.cpp b/src/neuroscopedoc.cpp
index bd1951e..e8defeb 100644
--- a/src/neuroscopedoc.cpp
+++ b/src/neuroscopedoc.cpp
@@ -581,32 +581,7 @@ int NeuroscopeDoc::openDocument(const QString& url)
 }
 
 #ifdef WITH_CEREBUS
-bool NeuroscopeDoc::openStream() {
-    // Let user choose sampling rate
-    QStringList items;
-    items << "30 000 Hz" << "10 000 Hz" << "2000 Hz" << "1000 Hz" << "500 Hz";
-
-    CerebusTracesProvider::SamplingGroup mapping[5] = {
-        CerebusTracesProvider::RATE_30k,
-        CerebusTracesProvider::RATE_10k,
-        CerebusTracesProvider::RATE_2K,
-        CerebusTracesProvider::RATE_1K,
-        CerebusTracesProvider::RATE_500
-    };
-
-    bool ok;
-	int answer = items.indexOf(QInputDialog::getItem(0, tr("Network Stream"),
-														tr("Please choose the sampling group to be displayed."),
-														items,
-														0, // current
-														false, //editable
-														&ok));
-
-	if (!ok || answer < 0)
-        return false;
-
-    CerebusTracesProvider::SamplingGroup group = mapping[answer];
-
+bool NeuroscopeDoc::openStream(CerebusTracesProvider::SamplingGroup group) {
     // Open network stream
 	CerebusTracesProvider* cerebusTracesProvider = new CerebusTracesProvider(group);
 
diff --git a/src/neuroscopedoc.h b/src/neuroscopedoc.h
index bbe99e6..bffaaaa 100644
--- a/src/neuroscopedoc.h
+++ b/src/neuroscopedoc.h
@@ -28,14 +28,14 @@
 
 #include <QEvent>
 
-
-
-
 //include files for the application
 #include "channelpalette.h"
 #include "dataprovider.h"
 #include "eventsprovider.h"
 
+#ifdef WITH_CEREBUS
+    #include "cerebustraceprovider.h" // For SamplingGroup
+#endif
 
 // forward declaration of the Neuroscope classes
 class NeuroscopeView;
@@ -118,7 +118,7 @@ class NeuroscopeDoc : public QObject
     /** Open network stream.
     * @return true on sucess, false otherwise.
     */
-    bool openStream();
+    bool openStream(CerebusTracesProvider::SamplingGroup group);
 #endif
 
     /**Saves the current session: displays, spike, cluster, event files opened and selected clusters and events.