--- a/src/hotspot/share/jfr/dcmd/jfrDcmds.hpp	Wed Oct 30 16:14:56 2019 +0100
+++ b/src/hotspot/share/jfr/dcmd/jfrDcmds.hpp	Wed Oct 30 19:43:52 2019 +0100
@@ -90,6 +90,7 @@
   DCmdArgument<char*> _filename;
   DCmdArgument<NanoTimeArgument> _maxage;
   DCmdArgument<MemorySizeArgument> _maxsize;
+  DCmdArgument<NanoTimeArgument> _flush_interval;
   DCmdArgument<bool> _dump_on_exit;
   DCmdArgument<bool> _path_to_gc_roots;