diff --git a/sim/response/base/CbmDigitization.cxx b/sim/response/base/CbmDigitization.cxx
index e8f6038d9c8d1cd804e7bc87cadc2a2f5479a44b..c1111e66d850195f443505461ed7493075be947e 100644
--- a/sim/response/base/CbmDigitization.cxx
+++ b/sim/response/base/CbmDigitization.cxx
@@ -68,7 +68,6 @@ CbmDigitization::~CbmDigitization()
     if (it->second) delete it->second;
   }  //# CbmDigitizeInfos
   // CbmDaq and the digitizers are destructed by FairRun.
-  if (fSource) delete fSource;
 }
 // --------------------------------------------------------------------------