diff --git a/src/TRestRawSignalRecoverChannelsProcess.cxx b/src/TRestRawSignalRecoverChannelsProcess.cxx
index 97c2ee66..3b06626f 100644
--- a/src/TRestRawSignalRecoverChannelsProcess.cxx
+++ b/src/TRestRawSignalRecoverChannelsProcess.cxx
@@ -175,6 +175,8 @@ TRestEvent* TRestRawSignalRecoverChannelsProcess::ProcessEvent(TRestEvent* evInp
         // cout << "Channel id : " << fChannelIds[x] << " Left : " << idL << " Right
         // : " << idR << endl;
 
+        if( fOutputSignalEvent->GetSignalIndex(fChannelIds[x])> 0 ) fOutputSignalEvent->RemoveSignalWithId(fChannelIds[x]);
+
         if (idL == -1 || idR == -1) continue;
 
         TRestRawSignal* leftSgnl = fInputSignalEvent->GetSignalById(idL);