diff --git a/latex/thesis/common.tex b/latex/thesis/common.tex
index 45694be..c59447a 100644
--- a/latex/thesis/common.tex
+++ b/latex/thesis/common.tex
@@ -170,7 +170,7 @@
     \lstset{
         mathescape=true,
         escapeinside=||,
-        frame=tB,
+        frame=TB,
         numbers=left,
         numberstyle=\tiny,
         basicstyle=\normalfont,