diff --git a/artiq/test/coredevice/test_moninj.py b/artiq/test/coredevice/test_moninj.py
index 3d9481ae0..83786a8a1 100644
--- a/artiq/test/coredevice/test_moninj.py
+++ b/artiq/test/coredevice/test_moninj.py
@@ -38,6 +38,7 @@ class MonInjTest(ExperimentCase):
                 moninj_comm.monitor_injection(True, loop_out_channel, TTLOverride.level.en.value)
                 loop.run_until_complete(asyncio.sleep(0.5))
                 moninj_comm.inject(loop_out_channel, TTLOverride.level.value, 0)
+                moninj_comm.inject(loop_out_channel, TTLOverride.level.oe.value, 1)
                 moninj_comm.inject(loop_out_channel, TTLOverride.level.en.value, 1)
                 loop.run_until_complete(asyncio.sleep(0.5))
                 moninj_comm.get_injection_status(loop_out_channel, TTLOverride.en.value)