diff --git a/src/app/fht.cpp b/src/app/fht.cpp
index f678bee..3a82ede 100644
--- a/src/app/fht.cpp
+++ b/src/app/fht.cpp
@@ -175,8 +175,8 @@ void FHT::power2(float *p)
 
 	*p = (*p * *p), *p += *p, p++;
 
-	for (i = 1, q = p + m_num - 2; i < (m_num / 2); i++, --q)
-		*p++ = (*p * *p) + (*q * *q);
+	for (i = 1, q = p + m_num - 2; i < (m_num / 2); i++, --q, p++)
+		*p = (*p * *p) + (*q * *q);
 }
 
 
diff --git a/src/app/mainWindow.cpp b/src/app/mainWindow.cpp
index 8e01fd5..159d84c 100644
--- a/src/app/mainWindow.cpp
+++ b/src/app/mainWindow.cpp
@@ -706,13 +706,19 @@ action( const char *name )
    TDEActionCollection *actionCollection = nullptr;
    TDEAction *action = nullptr;
 
-   if( mainWindow = (MainWindow*)kapp->mainWidget() )
-      if( actionCollection = mainWindow->actionCollection() )
-         action = actionCollection->action( name );
+   mainWindow = dynamic_cast<MainWindow *>(kapp->mainWidget());
+   if (mainWindow)
+   {
+      actionCollection = mainWindow->actionCollection();
+      if (actionCollection)
+      {
+         action = actionCollection->action(name);
+      }
+   }
 
-   Q_ASSERT( mainWindow );
-   Q_ASSERT( actionCollection );
-   Q_ASSERT( action );
+   Q_ASSERT(mainWindow);
+   Q_ASSERT(actionCollection);
+   Q_ASSERT(action);
 
    return action;
 }
diff --git a/src/app/stateChange.cpp b/src/app/stateChange.cpp
index e0450d3..efa9389 100644
--- a/src/app/stateChange.cpp
+++ b/src/app/stateChange.cpp
@@ -120,6 +120,8 @@ MainWindow::engineStateChanged( Engine::State state )
       case Engine::Paused:
          m_positionSlider->setEnabled( TheStream::canSeek() );
          break;
+      default:
+         break;
    }
 
 
@@ -160,6 +162,8 @@ MainWindow::engineStateChanged( Engine::State state )
       case Engine::TrackEnded:
          m_titleLabel->setText( TheStream::prettyTitle() );
          break;
+      default:
+         break;
    }
 
 
@@ -187,6 +191,8 @@ MainWindow::engineStateChanged( Engine::State state )
       case Engine::Playing:
          toolBar()->hide();
          break;
+      default:
+         break;
       }
    }
 }
diff --git a/src/app/videoWindow.cpp b/src/app/videoWindow.cpp
index b005206..0688112 100644
--- a/src/app/videoWindow.cpp
+++ b/src/app/videoWindow.cpp
@@ -226,11 +226,6 @@ VideoWindow::event( TQEvent *e )
          stop();
          return false;
 
-      case VideoWindow::ExposeEvent:
-         //see VideoWindow::x11Event()
-
-         return true;
-
       // Xlib.h sucks fucking balls!!!!11!!1!
       #undef KeyPress
       case TQEvent::KeyPress: {
diff --git a/src/app/xineEngine.cpp b/src/app/xineEngine.cpp
index 6132f4a..e38ff4e 100644
--- a/src/app/xineEngine.cpp
+++ b/src/app/xineEngine.cpp
@@ -615,7 +615,7 @@ VideoWindow::scope()
    //prune the buffer list and update the m_current_vpts timestamp
    timerEvent( nullptr );
 
-   const int64_t pts_per_smpls  = 0; //scope_plugin_pts_per_smpls( m_scope );
+   // const int64_t pts_per_smpls  = 0; //scope_plugin_pts_per_smpls( m_scope );
    for( int channels = xine_get_stream_info( m_stream, XINE_STREAM_INFO_AUDIO_CHANNELS ), frame = 0; frame < SCOPE_SIZE; )
    {
       MyNode *best_node = nullptr;
@@ -631,7 +631,7 @@ VideoWindow::scope()
       diff  = m_current_vpts;
       diff -= best_node->vpts;
       diff *= 1<<16;
-      diff /= pts_per_smpls;
+      // diff /= pts_per_smpls;
 
       const int16_t*
       data16  = best_node->mem;
diff --git a/src/app/xineEngine.h b/src/app/xineEngine.h
index d152a96..638bc01 100644
--- a/src/app/xineEngine.h
+++ b/src/app/xineEngine.h
@@ -136,8 +136,6 @@ namespace Codeine
       void becomePreferredSize();
       TQImage captureFrame() const;
 
-      enum { ExposeEvent = 3000 };
-
    public slots:
       void resetZoom();