diff --git a/artiq/frontend/artiq_influxdb.py b/artiq/frontend/artiq_influxdb.py
index 42ef923c2..72ec1b9f0 100755
--- a/artiq/frontend/artiq_influxdb.py
+++ b/artiq/frontend/artiq_influxdb.py
@@ -127,6 +127,9 @@ class Parameters:
         if v_db is not None and self.filter_function(k):
             self.writer.update(k, v_db)
 
+    def __delitem__(self, k):
+        pass
+
 
 class MasterReader(TaskObject):
     def __init__(self, server, port, retry, filter_function, writer):