diff --git a/src/Main.hs b/src/Main.hs
index f0e8e04..640ad87 100644
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -123,7 +123,7 @@ main =
              "Compare, patch and merge files on arbitrarily-tokenized sequences." <>
            header "adiff: arbitrary-token diff utilities")
    in do ADiffOptions {adiffRedfaOpt = ropt, adiffCmdOpts = copt} <-
-           execParser opts
+           customExecParser (prefs $ helpShowGlobals <> subparserInline) opts
          redfa <- redfaPrepareRules ropt
          case copt of
            CmdDiff {diffFile1 = f1, diffFile2 = f2, context = ctxt} -> do