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-rw-r--r--libs/ardour/control_protocol_manager.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/libs/ardour/control_protocol_manager.cc b/libs/ardour/control_protocol_manager.cc
index 8616848467..bd5b7e72a6 100644
--- a/libs/ardour/control_protocol_manager.cc
+++ b/libs/ardour/control_protocol_manager.cc
@@ -76,6 +76,7 @@ ControlProtocolManager::~ControlProtocolManager()
for (list<ControlProtocolInfo*>::iterator p = control_protocol_info.begin(); p != control_protocol_info.end(); ++p) {
+ (*p)->protocol = 0; // protocol was already destroyed above.
delete (*p);
}