diff --git a/include/c11log/sinks/sink.h b/include/c11log/sinks/sink.h
index 4f5bd7d3..4338019e 100644
--- a/include/c11log/sinks/sink.h
+++ b/include/c11log/sinks/sink.h
@@ -9,6 +9,7 @@ namespace sinks
 class sink
 {
 public:
+    virtual ~sink() {}
     virtual void log(const details::log_msg& msg) = 0;
 };
 }