diff --git a/libs/evoral/src/Event.cpp b/libs/evoral/src/Event.cpp
index 39f31f50d8..aee4445d23 100644
--- a/libs/evoral/src/Event.cpp
+++ b/libs/evoral/src/Event.cpp
@@ -98,6 +98,7 @@ Event<Timestamp>::operator=(const Event& copy)
 	_type = copy._type;
 	_original_time = copy._original_time;
 	_nominal_time = copy._nominal_time;
+	_owns_buf = copy._owns_buf;
 	if (_owns_buf) {
 		if (copy._buf) {
 			if (copy._size > _size) {