diff --git a/install/variables/system.py b/install/variables/system.py
index 7f241b3..f7c2add 100644
--- a/install/variables/system.py
+++ b/install/variables/system.py
@@ -718,8 +718,25 @@ class VariableClInstallAutocheckSet(update.VariableClUpdateAutocheckSet):
     def get(self):
         return self.Get('update.cl_update_autocheck_set')
 
+    def uncompatible(self):
+        """
+        Update setting up unavailable for flash installation
+        """
+        if self.Get('os_install_root_type') == 'flash':
+            return \
+                _("Update configuration unavailable for Flash install")
+        return ""
 
 class VariableClInstallAutocheckInterval(
     update.VariableClUpdateAutocheckInterval):
     def get(self):
         return self.Get('update.cl_update_autocheck_interval')
+
+    def uncompatible(self):
+        """
+        Update setting up unavailable for flash installation
+        """
+        if self.Get('os_install_root_type') == 'flash':
+            return \
+                _("Update configuration unavailable for Flash install")
+        return ""