diff --git a/latexpic.sh b/latexpic.sh
index fbe584e..5678f59 100755
--- a/latexpic.sh
+++ b/latexpic.sh
@@ -11,6 +11,7 @@ cat > doc.tex << EOF
  per-mode=fraction,
  quotient-mode=fraction
 }
+\usepackage{chemfig}
 \renewcommand*\familydefault{\sfdefault}
 
 \begin{document}