diff --git a/ase/makefile.in b/ase/makefile.in
index 50c4a188..83971359 100644
--- a/ase/makefile.in
+++ b/ase/makefile.in
@@ -1,4 +1,4 @@
-SUBDIRS=bas net utl stx lsp
+SUBDIRS=bas sys net utl stx lsp
 
 all:
 	@for i in $(SUBDIRS); \