diff --git a/pandoc.hs b/pandoc.hs
index 1836fe345..29a4fb213 100644
--- a/pandoc.hs
+++ b/pandoc.hs
@@ -747,9 +747,11 @@ usageMessage :: String -> [OptDescr (Opt -> IO Opt)] -> String
 usageMessage programName = usageInfo
   (programName ++ " [OPTIONS] [FILES]" ++ "\nInput formats:  " ++
   (wrapWords 16 78 $ readers'names) ++ "\nOutput formats: " ++
-  (wrapWords 16 78 $ writers'names) ++ "\nOptions:")
+  (wrapWords 16 78 $ writers'names) ++
+     '\n' : replicate 16 ' ' ++
+     "[*for pdf output, use latex or beamer and -o FILENAME.pdf]\nOptions:")
   where
-    writers'names = sort $ map fst writers
+    writers'names = sort $ "pdf*" : map fst writers
     readers'names = sort $ map fst readers
 
 -- Determine default reader based on source file extensions