diff --git a/build.sh b/build.sh
index 6982c3e..5ba894d 100755
--- a/build.sh
+++ b/build.sh
@@ -18,6 +18,13 @@ template () {
 	fi
 }
 
+markdown () {
+	# TODO: hacky
+	cmark --unsafe "$1" \
+	| sed "s/<a /<a rel='noopener noreferrer' /gi" \
+	| sed 's/\[\[\(.*\)\]\]/<a href="\1.html">\1<\/a>/g'
+}
+
 outdir=build
 mkdir -p $outdir
 # Autocopiarnos :)
@@ -25,7 +32,7 @@ cp ./*.sh ./*.md ./*.css ./*.png ./*.mp4 "$outdir"
 
 index="$outdir/index.html"
 inicio=true header=false template "nulo.in" > "$index"
-cmark --unsafe index.md >> "$index"
+markdown index.md >> "$index"
 echo "<h2>Lista de páginas</h2><ul>" >> "$index"
 
 for file in *.md; do
@@ -33,10 +40,7 @@ for file in *.md; do
 	title="$(basename "$file" .md)"
 	outfile="$outdir/$title.html"
 	template "$title" "$file" > "$outfile"
-	cmark --unsafe "$file" >> "$outfile"
-	# TODO: hacky
-	sed -i "s/<a /<a rel='noopener noreferrer' /gi" "$outfile"
-	sed -i 's/\[\[\(.*\)\]\]/<a href="\1.html">\1<\/a>/g' "$outfile"
+	markdown "$file" >> "$outfile"
 	echo "<li><a href='$title.html'>$title</a></li>" >> "$index"
 done