diff --git a/src/emu/emu_args.c b/src/emu/emu_args.c
index 9979bc3..362bb0f 100644
--- a/src/emu/emu_args.c
+++ b/src/emu/emu_args.c
@@ -14,13 +14,18 @@ static char progname[] = "ovniemu";
 static void
 usage(void)
 {
-	rerr("Usage: %s [-c offsetfile] tracedir\n", progname);
+	rerr("Usage: %s [-c offsetfile] [-lh] tracedir\n", progname);
 	rerr("\n");
 	rerr("Options:\n");
 	rerr("  -c offsetfile      Use the given offset file to correct\n");
 	rerr("                     the clocks among nodes. It can be\n");
 	rerr("                     generated by the ovnisync program\n");
 	rerr("\n");
+	rerr("  -l                 Enable linter mode. Extra tests will\n");
+	rerr("                     be performed.\n");
+	rerr("\n");
+	rerr("  -h                 Show help.\n");
+	rerr("\n");
 	rerr("  tracedir           The output trace dir generated by ovni.\n");
 	rerr("\n");
 	rerr("The output PRV files are placed in the tracedir directory.\n");