diff --git a/Code/Mantid/instrument/HYSPEC_Parameters.xml b/Code/Mantid/instrument/HYSPEC_Parameters.xml
index f781a0f08d8155f5f296e4760fff7a868c41f9f2..5c63a9e9e716aef7cee48b8cd98443250348b9e0 100644
--- a/Code/Mantid/instrument/HYSPEC_Parameters.xml
+++ b/Code/Mantid/instrument/HYSPEC_Parameters.xml
@@ -193,5 +193,10 @@
 		<parameter name="t0_formula" type="string">
 			<value val="4.0 + (107.0 / (1.0 + (incidentEnergy / 31.0)^3))" />
 		</parameter>
+		
+		<parameter name="treat-background-as-events" type="string">
+			<value val="yes" />
+		</parameter>
+		
 	</component-link>
 </parameter-file>