diff --git a/specification/Makefile b/specification/Makefile
index 3b47fbf..45762e7 100644
--- a/specification/Makefile
+++ b/specification/Makefile
@@ -18,8 +18,8 @@ REQUIRES := --require=asciidoctor-bibtex \
             --require=asciidoctor-mathematical
 REQUIRES := --require=asciidoctor-bibtex \
             --require=asciidoctor-diagram \
+#           --require=./preprocessor.rb \
             --require=asciidoctor-mathematical
-#            --require=./preprocessor.rb
 
 .PHONY: all build clean build-container build-no-container
 
diff --git a/specification/riscv-cove-io.pdf b/specification/riscv-cove-io.pdf
index 36ce079..62143fc 100644
Binary files a/specification/riscv-cove-io.pdf and b/specification/riscv-cove-io.pdf differ