diff --git a/Isabelle_DOF-Ontologies/CENELEC_50128/DOF-CENELEC_50128.sty b/Isabelle_DOF-Ontologies/CENELEC_50128/DOF-CENELEC_50128.sty
index 53e6f38..23c2e74 100644
--- a/Isabelle_DOF-Ontologies/CENELEC_50128/DOF-CENELEC_50128.sty
+++ b/Isabelle_DOF-Ontologies/CENELEC_50128/DOF-CENELEC_50128.sty
@@ -128,7 +128,7 @@
   \begin{isamarkuptext}%
       \ifthenelse{\equal{\commandkey{CENELECUNDERSCOREFIVEZEROONETWOEIGHTDOTrequirementDOTlongUNDERSCOREname}}{}}{%
         \begin{EC}%
-            \addxcontentsline{tos}{chapter}[]{\autoref{\commandkey{label}}}%
+            \addxcontentsline{toe}{chapter}[]{\autoref{\commandkey{label}}}%
       }{%
         \begin{EC}[\commandkey{CENELECUNDERSCOREFIVEZEROONETWOEIGHTDOTrequirementDOTlongUNDERSCOREname}]%
           \addxcontentsline{toe}{chapter}[]{\autoref{\commandkey{label}}: \commandkey{CENELECUNDERSCOREFIVEZEROONETWOEIGHTDOTrequirementDOTlongUNDERSCOREname}}%