diff --git a/Makefile b/Makefile
index 75ba2cf..ec03089 100644
--- a/Makefile
+++ b/Makefile
@@ -31,12 +31,13 @@ references: $(REFERENCES)
 	bibtex $(OUT_DIR)/annexes
 	bibtex $(OUT_DIR)/references
 
-.PHONY: --inner_pdf
---inner_pdf: $(CONTENTS) $(PACKAGES) $(REFERENCES) $(GRAPHS)
+.PHONY: inner_pdf
+inner_pdf: $(CONTENTS) $(PACKAGES) $(REFERENCES) $(GRAPHS) | $(OUT_DIR)
 	pdflatex -output-directory $(OUT_DIR) main.tex
 
 .PHONY: pdf
-pdf: $(GRAPHS_IMG) --inner_pdf references index --inner_pdf references --inner_pdf
+pdf: graphs inner_pdf references index
+	make inner_pdf
 
 .PHONY: preview
 preview: pdf