diff --git a/core/metacling/src/TCling.cxx b/core/metacling/src/TCling.cxx
index 37ab168eeb826..32af3d2a318c5 100644
--- a/core/metacling/src/TCling.cxx
+++ b/core/metacling/src/TCling.cxx
@@ -1839,6 +1839,7 @@ void TCling::LoadPCM(std::string pcmFileNameFullPath)
       std::string RDictFileOpts = pcmFileNameFullPath + "?filetype=pcm";
       TMemFile pcmMemFile(RDictFileOpts.c_str(), range);
 
+      cling::Interpreter::PushTransactionRAII deserRAII(GetInterpreterImpl());
       LoadPCMImpl(pcmMemFile);
       fPendingRdicts.erase(pendingRdict);