diff --git a/ghc/utils/mkdependHS/mkdependHS.prl b/ghc/utils/mkdependHS/mkdependHS.prl
index f76bee65e5ca32f24fb40ba32dcdb449e8b9ec02..67308451e99b8b4c2d96415e8531b4ed95bb2449 100644
--- a/ghc/utils/mkdependHS/mkdependHS.prl
+++ b/ghc/utils/mkdependHS/mkdependHS.prl
@@ -49,7 +49,7 @@ mkdependHS-specific options (not between --'s):
                 don't generate any dependencies on modules therein.
     -Xdirs      same as --exclude-directory
     --include-prelude
-		Regard prelude library as unstable, i.e., generate dependencies
+		Regard prelude libraries as unstable, i.e., generate dependencies
 		on prelude modules. This option is normally only used by the
                 various system libraries. If a -syslib option is used, dependencies
                 will also be generated on the library's interfaces.