diff --git a/Makefile b/Makefile
index 3c0691746..59cb9268a 100644
--- a/Makefile
+++ b/Makefile
@@ -74,7 +74,7 @@ $(OUTPUT_DIRNAME)/$(DOC_FILENAME).pdf: $(DOC_FILES) $(FIGURE_FILES)
 $(OUTPUT_DIRNAME)/$(DOC_FILENAME).html: header.html $(DOC_FILES) $(FIGURE_FILES)
 	@mkdir -p $(OUTPUT_DIRNAME)/ && \
 	cp -ap img/ $(shell pwd)/$(OUTPUT_DIRNAME)/&& \
-	$(PANDOC) -f markdown_github -t html5 -H $(PANDOC_SRC)/header.html --standalone -o $(PANDOC_DST)$@ $(patsubst %,$(PANDOC_SRC)%,$(DOC_FILES))
+	$(PANDOC) -f markdown_github -t html5 -H $(PANDOC_SRC)header.html --standalone -o $(PANDOC_DST)$@ $(patsubst %,$(PANDOC_SRC)%,$(DOC_FILES))
 	ls -sh $(shell readlink -f $@)
 endif