diff --git a/ahilbig-common.sty b/ahilbig-common.sty
index 3855194..7a96678 100644
--- a/ahilbig-common.sty
+++ b/ahilbig-common.sty
@@ -719,6 +719,7 @@
 \mode<article>
 
 \newif\ifbonus
+\newif\ifexaddtotoc
 
 \pgfkeys{
   /ddi/exercise/title/.initial=,
@@ -730,6 +731,9 @@
   /ddi/exercise/solution/.style={@solution=mit~Lösung},
   /ddi/exercise/@examtext/.initial=,
   /ddi/exercise/exam/.is choice,
+  %new key by ahilbig
+	/ddi/exercise/addtotoc/.is if=exaddtotoc,
+	%
   /ddi/exercise/exam/no/.style={@examtext=nicht~klausurrelevant},
   /ddi/exercise/exam/used/.style={@examtext=original~Klausuraufgabe},
   /ddi/exercise/exam/typical/.style={@examtext=typische~Klausuraufgabe},
@@ -791,6 +795,12 @@
     \llap{\box\mybox}%
     \def\infostring{}%
     \possiblyuse{title}%
+		% added by ahilbig -- 
+		%   it's a dirty hack: mymacro keeps its value from the last key
+		\ifexaddtotoc
+			\addcontentsline{toc}{subsection}{\insertexercisetext\ \theexercisenumber\ -- \mymacro}
+		\fi
+		% ----------------
     \possiblyuse{level}%
     \possiblyuse{@credits}%
     \possiblyuse{how}%