1 files changed, 3 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 510d3bc..e6731ac 100644
--- a/Makefile
+++ b/Makefile
@@ -49,7 +49,9 @@ help:
 	@echo 'Set the RELATIVE variable to 1 to enable relative urls                    '
 	@echo '                                                                          '
 
-content/extras/style.min.css: theme/Flex/static/stylesheet/style.min.css theme/custom/custom.css
+SOURCE_THEME=theme/Flex/static/stylesheet/style.min.css
+
+content/extras/style.min.css: $(SOURCE_THEME) theme/custom/custom.css
 	css_merge -o $@ $^
 
 html: content/extras/style.min.css