diff --git a/include/InlineAutomation.h b/include/InlineAutomation.h
index 89f3e9164..70cefbec9 100644
--- a/include/InlineAutomation.h
+++ b/include/InlineAutomation.h
@@ -52,9 +52,7 @@ public:
 	inline bool hasAutomation() const
 	{
 		return m_autoPattern != NULL &&
-			!typeInfo<float>::isEqual(
-					m_autoPattern->getTimeMap()[0],
-							defaultValue() );
+			m_autoPattern->getTimeMap().isEmpty() == false;
 	}
 
 	AutomationPattern * automationPattern()
diff --git a/src/gui/piano_roll.cpp b/src/gui/piano_roll.cpp
index 1728b1c03..6679120a1 100644
--- a/src/gui/piano_roll.cpp
+++ b/src/gui/piano_roll.cpp
@@ -618,7 +618,7 @@ pianoRoll::pianoRoll() :
 	if( engine::mainWindow()->workspace() )
 	{
 		engine::mainWindow()->workspace()->addSubWindow( this );
-		parentWidget()->setMinimumWidth( tb_layout->minimumSize().width()+10 );
+		parentWidget()->setMinimumSize( tb_layout->minimumSize().width()+10, 200 );
 		parentWidget()->resize( tb_layout->minimumSize().width()+10,
 						INITIAL_PIANOROLL_HEIGHT );
 		parentWidget()->hide();
@@ -917,6 +917,9 @@ inline void pianoRoll::drawDetuningInfo( QPainter & _p, note * _n, int _x,
 	int middle_y = _y + KEY_LINE_HEIGHT / 2;
 	_p.setPen( QColor( 0xFF, 0xDF, 0x20 ) );
 
+	int old_x = 0;
+	int old_y = 0;
+
 	timeMap & map = _n->detuning()->automationPattern()->getTimeMap();
 	for( timeMap::ConstIterator it = map.begin(); it != map.end(); ++it )
 	{
@@ -929,10 +932,28 @@ inline void pianoRoll::drawDetuningInfo( QPainter & _p, note * _n, int _x,
 
 		const float level = it.value();
 
-		int pos_y = (int)( middle_y - level * KEY_LINE_HEIGHT / 10 );
+		int pos_y = (int)( middle_y - level * KEY_LINE_HEIGHT );
+
+		if( old_x != 0 && old_y != 0 )
+		{
+			switch( _n->detuning()->automationPattern()->progressionType() )
+			{
+			case AutomationPattern::DiscreteProgression:
+				_p.drawLine( old_x, old_y, pos_x, old_y );
+				_p.drawLine( pos_x, old_y, pos_x, pos_y );
+				break;
+			case AutomationPattern::CubicHermiteProgression: /* TODO */
+			case AutomationPattern::LinearProgression:
+				_p.drawLine( old_x, old_y, pos_x, pos_y );
+				break;
+			}
+		}
 
 		_p.drawLine( pos_x - 1, pos_y, pos_x + 1, pos_y );
 		_p.drawLine( pos_x, pos_y - 1, pos_x, pos_y + 1 );
+
+		old_x = pos_x;
+		old_y = pos_y;
 	}
 }