diff --git a/src/themes/Makefile b/src/themes/Makefile
index cc92d667..784df396 100644
--- a/src/themes/Makefile
+++ b/src/themes/Makefile
@@ -1,5 +1,5 @@
 THEME_SRC=Kali-Purple/
-SUBDIRS=$(foreach SUBDIR,gtk2 gtk3 xfwm4,assets-renderer/$(SUBDIR)) sass
+SUBDIRS?=$(foreach SUBDIR,gtk2 gtk3 xfwm4,assets-renderer/$(SUBDIR)) sass
 
 .PHONY: build $(SUBDIRS) clean