diff --git a/latex/lectures/preamble.tex b/latex/lectures/preamble.tex
index 4679915..e3ec506 100644
--- a/latex/lectures/preamble.tex
+++ b/latex/lectures/preamble.tex
@@ -36,7 +36,7 @@
 
 % uses the same spacing as \hilight, but does no highlighting.  Use on the
 % original code when using incremental highlighting.
-\newcommand{\nohilight}[1]{\hspace{-0.7\fboxsep}{\fboxrule0pt\fbox{#1}}}
+\newcommand{\nohilight}[1]{\setlength{\fboxsep}{1pt}\fboxrule0pt\fbox{#1}}
 
 \newcommand{\error}[1]{\colorbox{red!75}{#1}}