diff --git a/tree/ntuple/v7/src/RField.cxx b/tree/ntuple/v7/src/RField.cxx
index e1062cd6c0795..acab4d5985ddc 100644
--- a/tree/ntuple/v7/src/RField.cxx
+++ b/tree/ntuple/v7/src/RField.cxx
@@ -3727,8 +3727,7 @@ void ROOT::Experimental::RUniquePtrField::ReadGlobalImpl(NTupleSize_t globalInde
       return;
 
    if (!isValidValue) {
-      valuePtr = malloc(fSubFields[0]->GetValueSize());
-      CallConstructValueOn(*fSubFields[0], valuePtr);
+      valuePtr = CallCreateObjectRawPtrOn(*fSubFields[0]);
       ptr->reset(reinterpret_cast<char *>(valuePtr));
    }