diff --git a/lrzip.c b/lrzip.c
index 37b96ac..7b35b24 100644
--- a/lrzip.c
+++ b/lrzip.c
@@ -1321,7 +1321,7 @@ bool initialise_control(rzip_control *control)
 	control->msgerr = stderr;
 	register_outputfile(control, control->msgout);
 	control->flags = FLAG_SHOW_PROGRESS | FLAG_KEEP_FILES | FLAG_THRESHOLD;
-	control->suffix = strdup(".lrz");
+	control->suffix = ".lrz";
 	control->compression_level = 7;
 	control->ramsize = get_ram(control);
 	if (unlikely(control->ramsize == -1))