diff --git a/artiq/test/coredevice/test_ad9910.py b/artiq/test/coredevice/test_ad9910.py
index aeeb22e49..52d1c5be4 100644
--- a/artiq/test/coredevice/test_ad9910.py
+++ b/artiq/test/coredevice/test_ad9910.py
@@ -147,11 +147,15 @@ class AD9910Test(ExperimentCase):
 
     def test_set_speed(self):
         self.execute(AD9910Exp, "set_speed")
-        self.assertLess(self.dataset_mgr.get("dt"), 70*us)
+        dt = self.dataset_mgr.get("dt")
+        print(dt)
+        self.assertLess(dt, 70*us)
 
     def test_set_speed_mu(self):
         self.execute(AD9910Exp, "set_speed_mu")
-        self.assertLess(self.dataset_mgr.get("dt"), 10*us)
+        dt = self.dataset_mgr.get("dt")
+        print(dt)
+        self.assertLess(dt, 10*us)
 
     def test_sync_window(self):
         self.execute(AD9910Exp, "sync_window")
diff --git a/artiq/test/coredevice/test_urukul.py b/artiq/test/coredevice/test_urukul.py
index a5cb222ef..ef24e9a86 100644
--- a/artiq/test/coredevice/test_urukul.py
+++ b/artiq/test/coredevice/test_urukul.py
@@ -122,7 +122,9 @@ class UrukulTest(ExperimentCase):
 
     def test_switch_speed(self):
         self.execute(UrukulExp, "switch_speed")
-        self.assertLess(self.dataset_mgr.get("dt"), 3*us)
+        dt = self.dataset_mgr.get("dt")
+        print(dt)
+        self.assertLess(dt, 3*us)
 
     def test_switches_readback(self):
         self.execute(UrukulExp, "switches_readback")
@@ -138,7 +140,9 @@ class UrukulTest(ExperimentCase):
 
     def test_att_speed(self):
         self.execute(UrukulExp, "att_speed")
-        self.assertLess(self.dataset_mgr.get("dt"), 3*us)
+        dt = self.dataset_mgr.get("dt")
+        print(dt)
+        self.assertLess(dt, 3*us)
 
     def test_io_update(self):
         self.execute(UrukulExp, "io_update")