diff --git a/Documentation/conf.py b/Documentation/conf.py
index 88c377d468d0f7edc44d8a91617894a6b8dd0cf2..aaa3f70aafcb77b3adaffe7e73cb39c2625e17b2 100644
--- a/Documentation/conf.py
+++ b/Documentation/conf.py
@@ -282,7 +282,13 @@ latex_elements = {
         \\definecolor{MyGray}{rgb}{0.80,0.80,0.80}
 
         \\makeatletter\\newenvironment{graybox}{%
-           \\begin{lrbox}{\\@tempboxa}\\begin{minipage}{\\columnwidth}}{\\end{minipage}\\end{lrbox}%
+	   \\newlength{\\py@noticelength}
+	   \\setlength{\\fboxrule}{1pt}
+	   \\setlength{\\fboxsep}{7pt}
+	   \\setlength{\\py@noticelength}{\\linewidth}
+	   \\addtolength{\\py@noticelength}{-2\\fboxsep}
+	   \\addtolength{\\py@noticelength}{-2\\fboxrule}
+           \\begin{lrbox}{\\@tempboxa}\\begin{minipage}{\\py@noticelength}}{\\end{minipage}\\end{lrbox}%
            \\colorbox{MyGray}{\\usebox{\\@tempboxa}}
         }\\makeatother