diff --git a/app/models/step_select_postcode.rb b/app/models/step_select_postcode.rb
index 2deaa0d..630c646 100644
--- a/app/models/step_select_postcode.rb
+++ b/app/models/step_select_postcode.rb
@@ -24,7 +24,7 @@ def validate_with(workflow, value)
       workflow.traverse_to(successor_step)
     else
       set_flash("Sorry, '#{value}' does not appear to be a valid value for a #{subtype_label}.
-      Have you left a space between the digits?")
+      Perhaps there's a typo or too many characters or maybe an extra space somewhere?")
     end
   end