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-rw-r--r--src/server/Event.hpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/server/Event.hpp b/src/server/Event.hpp
index 9cd97a35..52e0ec3e 100644
--- a/src/server/Event.hpp
+++ b/src/server/Event.hpp
@@ -73,7 +73,7 @@ public:
virtual void post_process() = 0;
/** Write the inverse of this event to `sink`. */
- virtual void undo(Interface& target) {}
+ virtual void undo(Interface&) {}
/** Return true iff this event has been pre-processed. */
inline bool is_prepared() const { return _status != Status::NOT_PREPARED; }