diff --git a/tools/dev/msftidy.rb b/tools/dev/msftidy.rb
index 1326ba6783..790f1eb224 100755
--- a/tools/dev/msftidy.rb
+++ b/tools/dev/msftidy.rb
@@ -423,7 +423,7 @@ class Msftidy
         error("Invalid ranking. You have '#{$1}'")
       end
     else
-      info('No Rank specified. The default is NormalRanking.')
+      info('No Rank specified. The default is NormalRanking. Please add an explicit Rank value.')
     end
   end