diff --git a/main/math.tex b/main/math.tex
index 3d1775f..ad06200 100644
--- a/main/math.tex
+++ b/main/math.tex
@@ -17,7 +17,7 @@
 \newcommand{\E}{\mathbb{E}}
 \newcommand{\D}{\mathbb{D}}
 \newcommand{\8}{\infty}
-\newcommand{\dx}{\mbox{d}}
+\newcommand{\dx}{\text{ d}}
 \newcommand{\floor}[1]{\left\lfloor #1 \right\rfloor}
 \newcommand{\ceil}[1]{\left\lceil #1 \right\rceil}
 \newcommand{\hastoeq}{\overset{!}{=}}