diff --git a/core_tools/GUI/keysight_videomaps/data_getter/scan_generator_Virtual.py b/core_tools/GUI/keysight_videomaps/data_getter/scan_generator_Virtual.py
index ab49e12c4954bf3e51b89e4c6c575aa6c65cef70..c727eedb0b2db02cdfb53e8a9083d472d88f7e2d 100644
--- a/core_tools/GUI/keysight_videomaps/data_getter/scan_generator_Virtual.py
+++ b/core_tools/GUI/keysight_videomaps/data_getter/scan_generator_Virtual.py
@@ -12,7 +12,7 @@ import time
 class fake_digitizer(MultiParameter):
         """docstring for fake_digitizer"""
         def __init__(self, name):
-            super().__init__(name=name, names = ("chan 1", "chan 2"), shapes = tuple([(20,20)]*2),
+            super().__init__(name=name, names = ("chan_1", "chan_2"), shapes = tuple([(20,20)]*2),
                         labels = ("chan 1", "chan 2"), units =("mV", "mV"),
                         docstring='1D scan parameter for digitizer')