diff --git a/src/sas/qtgui/Perspectives/Invariant/UI/TabbedInvariantUI.ui b/src/sas/qtgui/Perspectives/Invariant/UI/TabbedInvariantUI.ui
index 411a95bbd2..12525f9154 100755
--- a/src/sas/qtgui/Perspectives/Invariant/UI/TabbedInvariantUI.ui
+++ b/src/sas/qtgui/Perspectives/Invariant/UI/TabbedInvariantUI.ui
@@ -143,6 +143,9 @@
                  <property name="enabled">
                   <bool>true</bool>
                  </property>
+                 <property name="readOnly">
+                  <bool>true</bool>
+                 </property>
                 </widget>
                </item>
                <item>
@@ -157,6 +160,9 @@
                  <property name="enabled">
                   <bool>true</bool>
                  </property>
+                 <property name="readOnly">
+                  <bool>true</bool>
+                 </property>
                 </widget>
                </item>
                <item>