diff --git a/src/tracer/tpTracerFile.erl b/src/tracer/tpTracerFile.erl
index 76a9aaa..34b1791 100644
--- a/src/tracer/tpTracerFile.erl
+++ b/src/tracer/tpTracerFile.erl
@@ -35,7 +35,7 @@ init(Parent, TracerOpts) ->
    process_flag(trap_exit, true),
    %% No need to close the file, it'll be closed when the process exits.
    FDir = maps:get(fDir, TracerOpts, <<"./">>),
-   FBaseName = maps:get(fBaseName, TracerOpts, <<"traces.zip">>),
+   FBaseName = maps:get(fBaseName, TracerOpts, <<"traces.tzip">>),
    Filename = fileName(FDir, FBaseName),
    {ok, IoDevice} = file:open(Filename, [write, raw]),