diff --git a/data/headers/LaTeX.header b/data/headers/LaTeX.header
index 30e182dc3..f6f1d4e7c 100644
--- a/data/headers/LaTeX.header
+++ b/data/headers/LaTeX.header
@@ -3,6 +3,6 @@
 \usepackage[mathletters]{ucs}
 \usepackage[utf8x]{inputenc}
 \usepackage{listings}
-\lstnewenvironment{code}{\lstset{language=Haskell,basicstyle=\small}}{}
+\lstnewenvironment{code}{\lstset{language=Haskell,basicstyle=\small\ttfamily}}{}
 \setlength{\parindent}{0pt}
 \setlength{\parskip}{6pt plus 2pt minus 1pt}