diff --git a/src/common/tests/MockServicerImpl_Context.py b/src/common/tests/MockServicerImpl_Context.py
index 667c9ed658cfbe648e345d691523375e1c5f8b79..e5d8ea76d25a81303df5a8e14073e1dcdc103ef0 100644
--- a/src/common/tests/MockServicerImpl_Context.py
+++ b/src/common/tests/MockServicerImpl_Context.py
@@ -263,7 +263,7 @@ class MockServicerImpl_Context(ContextServiceServicer):
             reply_device.CopyFrom(device)
             if exclude_endpoints:    del reply_device.device_endpoints [:] # pylint: disable=no-member
             if exclude_config_rules: del reply_device.device_config.config_rules[:] # pylint: disable=no-member
-            if exclude_components:   del reply_device.component[:] # pylint: disable=no-member
+            if exclude_components:   del reply_device.components[:] # pylint: disable=no-member
             devices.append(reply_device)
                 
         reply = DeviceList(devices=devices)