diff --git a/Makefile b/Makefile
index a8d5fd39b..175612a45 100644
--- a/Makefile
+++ b/Makefile
@@ -69,7 +69,7 @@ $(OUTPUT_DIRNAME)/$(DOC_FILENAME).pdf: $(DOC_FILES) $(FIGURE_FILES)
 else
 $(OUTPUT_DIRNAME)/$(DOC_FILENAME).pdf: $(DOC_FILES) $(FIGURE_FILES)
 	@mkdir -p $(OUTPUT_DIRNAME)/ && \
-	$(PANDOC) -f markdown_github -t latex --latex-engine=xelatex -o $(PANDOC_DST)$@ $(patsubst %,$(PANDOC_SRC)%,$(DOC_FILES))
+	$(PANDOC) -f markdown_github -t latex --pdf-engine=xelatex -o $(PANDOC_DST)$@ $(patsubst %,$(PANDOC_SRC)%,$(DOC_FILES))
 	ls -sh $(realpath $@)
 
 $(OUTPUT_DIRNAME)/$(DOC_FILENAME).html: header.html $(DOC_FILES) $(FIGURE_FILES)