diff --git a/MuonSpectrometer/MuonSimData/MuonSimData/selection.xml b/MuonSpectrometer/MuonSimData/MuonSimData/selection.xml
index 14af4046cf6f01580ad4a89662403610f54cf1d2..27a524cc001746e93294a29ffdf4621bde4e4a63 100644
--- a/MuonSpectrometer/MuonSimData/MuonSimData/selection.xml
+++ b/MuonSpectrometer/MuonSimData/MuonSimData/selection.xml
@@ -2,13 +2,13 @@
  <class name="MuonSimDataCollection" id="5B50C32E-A036-4B49-AC97-716E53210BE2" />
      <class name="MuonSimData" />
      <class name="MuonMCData" />     
-     <class name="std::pair< HepMcParticleLink ,MuonMCData>" /> 
+     <class pattern="std::*pair*<HepMcParticleLink,MuonMCData>" /> 
      <class name="std::vector<std::pair< HepMcParticleLink , MuonMCData> >" />
      <class name="std::map<Identifier,MuonSimData>" />
  <class name="CscSimDataCollection" id="250EC949-F98B-4F74-9034-178847D1B622" />
      <class name="CscSimData" />
      <class name="CscMcData" />     
-     <class name="std::pair< HepMcParticleLink,CscMcData>" /> 
+     <class pattern="std::*pair*<HepMcParticleLink,CscMcData>" /> 
      <class name="std::vector<std::pair< HepMcParticleLink,CscMcData> >" />
      <class name="std::map<Identifier,CscSimData>" />