diff --git a/config/makefiles/root.in b/config/makefiles/root.in
index ad1ed80..9a07550 100644
--- a/config/makefiles/root.in
+++ b/config/makefiles/root.in
@@ -5,9 +5,9 @@ PARROT_ARGS   :=
 
 ## configuration settings
 VERSION       := @versiondir@
-BIN_DIR       := @bin_dir@
-LIB_DIR       := @lib_dir@$(VERSION)
-DOC_DIR       := @doc_dir@$(VERSION)
+BIN_DIR       := @bindir@
+LIB_DIR       := @libdir@$(VERSION)
+DOC_DIR       := @docdir@$(VERSION)
 MANDIR        := @mandir@$(VERSION)
 
 # Set up extensions