diff --git a/artiq/gateware/test/serwb/test_serwb_init.py b/artiq/gateware/test/serwb/test_serwb_init.py
index c64d59e45..1651489fa 100644
--- a/artiq/gateware/test/serwb/test_serwb_init.py
+++ b/artiq/gateware/test/serwb/test_serwb_init.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 import unittest
 
 from migen import *