diff --git a/qcodes/instrument_drivers/tektronix/AWG5014.py b/qcodes/instrument_drivers/tektronix/AWG5014.py
index 6de75edadb70..0c599d048d24 100644
--- a/qcodes/instrument_drivers/tektronix/AWG5014.py
+++ b/qcodes/instrument_drivers/tektronix/AWG5014.py
@@ -352,7 +352,7 @@ def __init__(self, name, address, timeout=180, **kwargs):
                 self.add_parameter(
                     'ch{}_m{}_del'.format(i, j),
                     label='Channel {} Marker {} delay'.format(i, j),
-                    units='ns',
+                    unit='ns',
                     get_cmd=m_del_cmd + '?',
                     set_cmd=m_del_cmd + ' {:.3f}e-9',
                     vals=vals.Numbers(0, 1),