diff --git a/artiq/examples/phaser/repository/demo_2tone.py b/artiq/examples/phaser/repository/demo_2tone.py
index 9ff1a099d..ee7eec6a3 100644
--- a/artiq/examples/phaser/repository/demo_2tone.py
+++ b/artiq/examples/phaser/repository/demo_2tone.py
@@ -15,6 +15,8 @@ class SAWGTestTwoTone(EnvExperiment):
     @kernel
     def run(self):
         self.core.reset()
+        delay(1*ms)
+
         self.ttl_sma.output()
 
         self.sawg0.reset()