diff --git a/format/math.tex b/format/math.tex
index 4cdcabc..00f33f8 100644
--- a/format/math.tex
+++ b/format/math.tex
@@ -11,6 +11,8 @@
 
 % ------------------------------------ %
 
+\mdfsetup{nobreak=true}
+
 \newcounter{thm}\setcounter{thm}{0}
 \renewcommand{\thethm}{\arabic{thm}}
 \newenvironment{thm}[2][]{