diff --git a/test/integration/test_GW150914_D_heterodyne.py b/test/integration/test_GW150914_D_heterodyne.py
index 66093b88..b5945cee 100644
--- a/test/integration/test_GW150914_D_heterodyne.py
+++ b/test/integration/test_GW150914_D_heterodyne.py
@@ -90,6 +90,8 @@
     post_trigger_duration=2,
     sample_transforms=sample_transforms,
     likelihood_transforms=likelihood_transforms,
+    n_steps=5,
+    popsize=10,
 )