diff --git a/DataFormats/L1Trigger/src/classes_def.xml b/DataFormats/L1Trigger/src/classes_def.xml
index eb57594354729..acdf01b30243d 100644
--- a/DataFormats/L1Trigger/src/classes_def.xml
+++ b/DataFormats/L1Trigger/src/classes_def.xml
@@ -55,7 +55,6 @@
   </class>
   <class name="std::vector<l1t::TkTripletWord>"/>
   <class name="edm::Wrapper<std::vector<l1t::TkTripletWord> >"/>
-  <class name="edm::Wrapper<l1t::TkTripletWordCollection>"/>
 
   <class name="l1t::EGamma" ClassVersion="14">
    <version ClassVersion="14" checksum="1235149790"/>