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-rw-r--r--gtk2_ardour/panner_ui.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/gtk2_ardour/panner_ui.cc b/gtk2_ardour/panner_ui.cc
index 32a703d196..8b39c9f290 100644
--- a/gtk2_ardour/panner_ui.cc
+++ b/gtk2_ardour/panner_ui.cc
@@ -239,6 +239,8 @@ PannerUI::setup_pan ()
twod_panner = 0;
delete _stereo_panner;
_stereo_panner = 0;
+ delete _mono_panner;
+ _mono_panner = 0;
if (nouts == 0 || nouts == 1) {