diff --git a/qupulse/pulses/multi_channel_pulse_template.py b/qupulse/pulses/multi_channel_pulse_template.py
index ca3f0140..b6c220b0 100644
--- a/qupulse/pulses/multi_channel_pulse_template.py
+++ b/qupulse/pulses/multi_channel_pulse_template.py
@@ -58,6 +58,7 @@ def __init__(self,
         if duration in (True, False):
             warnings.warn("Boolean duration is deprecated since qupulse 0.6 and interpreted as None",
                           category=DeprecationWarning, stacklevel=2)
+            duration = None
 
         for subtemplate in self._subtemplates:
             if isinstance(subtemplate, AtomicPulseTemplate):
diff --git a/tests/pulses/multi_channel_pulse_template_tests.py b/tests/pulses/multi_channel_pulse_template_tests.py
index d76b9ee5..89e2b782 100644
--- a/tests/pulses/multi_channel_pulse_template_tests.py
+++ b/tests/pulses/multi_channel_pulse_template_tests.py
@@ -68,8 +68,6 @@ def test_non_atomic_subtemplates(self):
         with self.assertRaises(TypeError):
             AtomicMultiChannelPulseTemplate((non_atomic_pt, {'A': 'C'}), atomic_pt)
 
-    @unittest.skip("This test is skipped because the init check was removed. We keep the code around here because there"
-                   " are plans to introduce a runtime warning instead which could be tested with a few modifications.")
     def test_instantiation_duration_check(self):
         subtemplates = [DummyPulseTemplate(parameter_names={'p1'},
                                            measurement_names={'m1'},
@@ -87,10 +85,11 @@ def test_instantiation_duration_check(self):
                                            duration='t_3',
                                            waveform=DummyWaveform(duration=4, defined_channels={'c3'}))]
 
-        with self.assertRaisesRegex(ValueError, 'duration equality'):
-            AtomicMultiChannelPulseTemplate(*subtemplates)
+        # with self.assertRaisesRegex(ValueError, 'duration equality'):
+        #     AtomicMultiChannelPulseTemplate(*subtemplates)
 
-        amcpt = AtomicMultiChannelPulseTemplate(*subtemplates, duration=True)
+        with self.assertWarns(DeprecationWarning):
+            amcpt = AtomicMultiChannelPulseTemplate(*subtemplates, duration=True)
         self.assertIs(amcpt.duration, subtemplates[0].duration)
 
         with self.assertRaisesRegex(ValueError, 'duration'):