diff --git a/Code/Mantid/MantidQt/CustomInterfaces/inc/MantidQtCustomInterfaces/Indirect/ContainerSubtraction.ui b/Code/Mantid/MantidQt/CustomInterfaces/inc/MantidQtCustomInterfaces/Indirect/ContainerSubtraction.ui
index 614d8149b5663099a12a8ede45f74e9fe5c9021c..928c73328d1a5e8d411a46f64441cd72afb72dac 100644
--- a/Code/Mantid/MantidQt/CustomInterfaces/inc/MantidQtCustomInterfaces/Indirect/ContainerSubtraction.ui
+++ b/Code/Mantid/MantidQt/CustomInterfaces/inc/MantidQtCustomInterfaces/Indirect/ContainerSubtraction.ui
@@ -151,6 +151,9 @@
               <layout class="QHBoxLayout" name="loScaleFactor">
                 <item>
                   <widget class="QDoubleSpinBox" name="spCanScale">
+                    <property name="enabled">
+                      <bool>false</bool>
+                    </property>
                     <property name="decimals">
                       <number>5</number>
                     </property>