diff --git a/baposter.cls b/baposter.cls
index 28418364f1e159d3107510400457356b607ecd4c..67e2aaf481ee42d38b643529a3ff5d6a42499608 100644
--- a/baposter.cls
+++ b/baposter.cls
@@ -138,7 +138,7 @@
 \RequirePackage{pgf}
 \RequirePackage{ifthen}
 \RequirePackage[T1]{fontenc}
-
+\RequirePackage[l2tabu, orthodox]{nag}
 \usetikzlibrary{decorations}
 \usetikzlibrary{fadings}
 
@@ -167,7 +167,6 @@
 \newcommand{\baposter@setfinalpapersize}[2]{\setlength{\baposter@finalpaperwidth}{#1}\setlength{\baposter@finalpaperheight}{#2}}
 \baposter@setfinalpapersize{841mm}{1189mm}
 
-\DeclareOptionX{archE}{\baposter@setfinalpapersize{91.44cm}{121.92cm}}
 \DeclareOptionX{paperwidth}[841mm]{\setlength{\baposter@finalpaperwidth}{#1}}
 \DeclareOptionX{paperheight}[1189mm]{\setlength{\baposter@finalpaperheight}{#1}}
 \DeclareOptionX{a0paper}{\baposter@setfinalpapersize{841mm}{1189mm}}
@@ -176,6 +175,7 @@
 \DeclareOptionX{a3paper}{\baposter@setfinalpapersize{297mm}{420mm}}
 \DeclareOptionX{a4paper}{\baposter@setfinalpapersize{210mm}{297mm}}
 \DeclareOptionX{a5paper}{\baposter@setfinalpapersize{148.5mm}{210mm}}
+\DeclareOptionX{archE}{\baposter@setfinalpapersize{91.44cm}{121.92cm}}
 
 \setlength{\baposter@finalmargin}{1.5cm}
 \DeclareOptionX{fontscale}[0.292]{\renewcommand{\baposter@fontscale}{#1}}
@@ -390,7 +390,7 @@
 \define@cmdkey[ba]{poster}[baposter@]{headerFontColor}       [black]       {}
 \define@cmdkey[ba]{poster}[baposter@]{boxColorOne}           [magenta]     {}
 \define@cmdkey[ba]{poster}[baposter@]{boxColorTwo}           [cyan]        {}
-\define@cmdkey[ba]{poster}[baposter@]{headerfont}            [\sc\Large]   {}
+\define@cmdkey[ba]{poster}[baposter@]{headerfont}            [\scshape\Large]   {}
 \define@cmdkey[ba]{poster}[baposter@]{textfont}              [{}]          {}
 
 \define@cmdkey[ba]{poster}[baposter@]{linewidth}             [2pt]         {}
@@ -428,7 +428,7 @@
   background=shadeLR,
   headershade=shadeLR,
   boxshade=none,
-  headerfont=\sc\Large,% or headerfont=\color{white}\textsf\textbf
+  headerfont=\scshape\Large,% or headerfont=\color{white}\textsf\textbf
   textfont={},
   textborder=faded,
   linewidth=2pt,
@@ -703,7 +703,7 @@
   % This setkeys call parses all provided options and depending on the option
   % value, assigns different handler functions to the \baposter(Box|Header)*
   % functions. Once that is done, we don't have to care about particular
-  % values for border, shading, etc. All we have to do is call the 
+  % values for border, shading, etc. All we have to do is call the
   % handler functions and let them do their job.
   \setkeys[ba]{poster}{#1}%
 %