diff --git a/gtk2_ardour/patch_change.cc b/gtk2_ardour/patch_change.cc
index 21a6fe1341..91d2853682 100644
--- a/gtk2_ardour/patch_change.cc
+++ b/gtk2_ardour/patch_change.cc
@@ -75,7 +75,7 @@ PatchChange::PatchChange (MidiView&                         region,
 
 PatchChange::~PatchChange ()
 {
-	/* _flag is deleted by the canvas container/parent it is placed in */
+	delete _flag;
 }
 
 void
diff --git a/gtk2_ardour/sys_ex.cc b/gtk2_ardour/sys_ex.cc
index c41b1c5f07..470dab0bdd 100644
--- a/gtk2_ardour/sys_ex.cc
+++ b/gtk2_ardour/sys_ex.cc
@@ -55,7 +55,7 @@ SysEx::SysEx (
 
 SysEx::~SysEx()
 {
-	/* _flag is deleted by the canvas container/parent it is placed in */
+	delete _flag;
 }
 
 bool