diff --git a/test/fuzzing/server_fuzzer.cc b/test/fuzzing/server_fuzzer.cc
index 3cffbae..b1ba3db 100644
--- a/test/fuzzing/server_fuzzer.cc
+++ b/test/fuzzing/server_fuzzer.cc
@@ -39,6 +39,8 @@ public:
 
   socket_t socket() const override { return 0; }
 
+  time_t duration() const override { return 0; };
+
 private:
   const uint8_t *data_;
   size_t size_;