diff --git a/instrument/Facilities.xml b/instrument/Facilities.xml
index 7977a083ef53dfaab3d0cb43adb1a431ee0e2daa..33026c4dbfb04ef403f3ac4980f50e5b5a6ee4cb 100644
--- a/instrument/Facilities.xml
+++ b/instrument/Facilities.xml
@@ -380,6 +380,7 @@
 
    <instrument name="REF_L" beamline="4B">
       <technique>Reflectometry</technique>
+      <livedata address="bl4b-daq1.sns.gov:31415" />
    </instrument>
 
    <instrument name="CNCS" beamline="5">