diff --git a/src/Common/MultiMediaSourceMuxer.h b/src/Common/MultiMediaSourceMuxer.h
index 610a68ef..6d34feaa 100644
--- a/src/Common/MultiMediaSourceMuxer.h
+++ b/src/Common/MultiMediaSourceMuxer.h
@@ -80,8 +80,6 @@ public:
         GET_OPT_VALUE(modify_stamp);
     }
 
-    ProtocolOption(const ProtocolOption &) = default;
-
 private:
     template <typename MAP, typename KEY, typename TYPE>
     static void getArgsValue(const MAP &allArgs, const KEY &key, TYPE &value) {