diff --git a/Makefile b/Makefile
index 26bb3ca..d27d797 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 QUBES_DIRS = qubes dom0
-ALL_DIRS = $(shell ls -d *\ | sed 's#\##')
+ALL_DIRS = $(shell ls -d */ | sed 's#/##')
 GENERAL_DIRS = $(filter-out $(QUBES_DIRS), $(ALL_DIRS))
 
 .PHONY: all update-git-submodule apply-general apply-qubes install-apt-essentials clean