diff --git a/makefile b/makefile
index e3ab559..af08920 100644
--- a/makefile
+++ b/makefile
@@ -1,5 +1,9 @@
-output.pdf : template.tex details.yml
-	pandoc $(filter-out $<,$^ ) -o $@ --latex-engine=xelatex --template=$<
+src = template.tex details.yml
+LFLAGS = --latex-engine=xelatex
 
+output.pdf : $(src)
+	pandoc $(filter-out $<,$^ ) -o $@ $(LFLAGS) --template=$<
+
+.PHONY: clean
 clean :
 	rm output.pdf