diff --git a/Makefile b/Makefile
index 03c903eab70452395088af2e3d9e4dd8c3d9bd69..6a1bb3139b9dfa683dea09f1b982c313be9ae2c3 100644
--- a/Makefile
+++ b/Makefile
@@ -18,10 +18,10 @@ PDF=$(MD:%.md=%.pdf)
 all: $(HTML) $(PDF)
 
 %.pdf: %.md metadata.yaml
-	pandoc -s $(OPTIONS) $(PDFOPTIONS) -o $@ $<
+	pandoc -s $(OPTIONS) $(PDFOPTIONS) -o $@ $^
 
 %.html: %.md metadata.yaml
-	pandoc -s $(OPTIONS) $(REVEALOPTIONS) -o $@ $<
+	pandoc -s $(OPTIONS) $(REVEALOPTIONS) -o $@ $^
 
 deploy: all 
 	mkdir -p prog_seq_c_cours
diff --git a/metadata.yaml b/metadata.yaml
index 89073bea36a0abada70bd0bb59b99031a0bfdf19..c13ae05cb832b58f3a2d9716f416cb2c19cd7b2d 100644
--- a/metadata.yaml
+++ b/metadata.yaml
@@ -3,5 +3,5 @@ subtitle: "Programmation séquentielle en C, 2020-2021"
 author: "Orestis Malaspinas (A401), ISC, HEPIA"
 institute: Inspirés des slides de F. Glück
 lang: fr-CH
-...
+---