diff --git a/projects/dlx/make.sh b/projects/dlx/make.sh
index 193f407..5b512e2 100644
--- a/projects/dlx/make.sh
+++ b/projects/dlx/make.sh
@@ -3,7 +3,8 @@
 std_opt="--workdir=work"
 srcdir="./src"
 
+mkdir -p work
 ghdl --remove $std_opt
 ghdl -i $std_opt $srcdir/*.vhdl
 ghdl -m $std_opt dlx_test_behaviour
-ghdl -r dlx_test_behaviour --vcd=dlx_test_behaviour.vcd --assert-level=note 
+ghdl -r $std_opt dlx_test_behaviour --vcd=dlx_test_behaviour.vcd --assert-level=note