diff --git a/Code/Mantid/instrument/CNCS_Parameters.xml b/Code/Mantid/instrument/CNCS_Parameters.xml
index a34211e8c1025979ae4f1540f6aae25d2192aa6f..ea360626064a2bf8ea5cf8b95ff7eada3cb224d7 100644
--- a/Code/Mantid/instrument/CNCS_Parameters.xml
+++ b/Code/Mantid/instrument/CNCS_Parameters.xml
@@ -194,5 +194,9 @@
 			<value val="198.2 * (1.0 + incidentEnergy)^(-0.84098)" />
 		</parameter>
 
+		<parameter name="treat-background-as-events" type="string">
+			<value val="no" />
+		</parameter>
+
 	</component-link>
 </parameter-file>