diff --git a/scripts/dom_activity.py b/scripts/dom_activity.py
index dc9fd01d41502e241170f15d4403b0014e535d2b..0ce686e1763fae68144e08c021bbaa4091cda745 100755
--- a/scripts/dom_activity.py
+++ b/scripts/dom_activity.py
@@ -105,7 +105,7 @@ def main():
     chpump_kwargs = {}
     plotter_kwargs = {}
 
-    if args['monitor']:
+    if not args['monitor']:
         det_id = int(args['-d'])
         plots_path = args['-o']
         ligier_ip = args['-l']