diff --git a/instrument/MERLIN_Parameters_2018_03.xml b/instrument/MERLIN_Parameters_2018_03.xml
index 64f9212deeb66366875214f30c86d0af3ad59c97..8ae55cbec86913160257fc38f556d76d6d3b2cf9 100644
--- a/instrument/MERLIN_Parameters_2018_03.xml
+++ b/instrument/MERLIN_Parameters_2018_03.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<parameter-file instrument = "MERLIN" valid-from = "2017-09-12T11:00:01">
+<parameter-file instrument = "MERLIN" valid-from = "2018-12-03 17:18:01">
 
 <component-link name = "MERLIN">