diff --git a/src/dataformatpanel.cpp b/src/dataformatpanel.cpp
--- a/src/dataformatpanel.cpp
+++ b/src/dataformatpanel.cpp
@@ -81,6 +81,7 @@ unsigned DataFormatPanel::numOfChannels(
 
 void DataFormatPanel::pause(bool enabled)
 {
+    paused = enabled;
     currentReader->pause(enabled);
     demoReader.pause(enabled);
 }
@@ -133,5 +134,8 @@ void DataFormatPanel::selectReader(Abstr
         emit numOfChannelsChanged(reader->numOfChannels());
     }
 
+    // pause
+    reader->pause(paused);
+
     currentReader = reader;
 }
diff --git a/src/dataformatpanel.h b/src/dataformatpanel.h
--- a/src/dataformatpanel.h
+++ b/src/dataformatpanel.h
@@ -71,7 +71,7 @@ private:
     /// Disable current reader and enable a another one
     void selectReader(AbstractReader* reader);
 
-    bool paused; // remove
+    bool paused;
 
     DemoReader demoReader;