diff --git a/src/core/SampleBuffer.cpp b/src/core/SampleBuffer.cpp
index 2db7e26fa..6941c6da9 100644
--- a/src/core/SampleBuffer.cpp
+++ b/src/core/SampleBuffer.cpp
@@ -942,6 +942,7 @@ void SampleBuffer::visualize( QPainter & _p, const QRect & _dr,
 	_p.drawPolyline( l, nb_frames / fpp );
 	_p.drawPolyline( r, nb_frames / fpp );
 	delete[] l;
+	delete[] r;
 }