diff --git a/core/metacling/src/TCling.cxx b/core/metacling/src/TCling.cxx
index f9e8b1f9c1575..30d702fb4c602 100644
--- a/core/metacling/src/TCling.cxx
+++ b/core/metacling/src/TCling.cxx
@@ -2720,15 +2720,6 @@ void TCling::InspectMembers(TMemberInspector& insp, const void* obj,
       return;
    }
 
-   if (TClassEdit::IsUniquePtr(cl->GetName())) {
-      // Ignore error caused by the inside of std::unique_ptr
-      // This is needed solely because of rootclingIO's IsUnsupportedUniquePointer
-      // which checks the number of elements in the GetListOfRealData.
-      // If this usage is removed, this can be replaced with a return statement.
-      // See https://github.com/root-project/root/issues/13574
-      isTransient = true;
-   }
-
    const char* cobj = (const char*) obj; // for ptr arithmetics
 
    // Treat the case of std::complex in a special manner. We want to enforce
diff --git a/io/rootpcm/src/rootclingIO.cxx b/io/rootpcm/src/rootclingIO.cxx
index b10b466e18d82..f47afce365d56 100644
--- a/io/rootpcm/src/rootclingIO.cxx
+++ b/io/rootpcm/src/rootclingIO.cxx
@@ -76,26 +76,6 @@ static bool IsUnsupportedUniquePointer(const char *normName, TDataMember *dm)
 
       if (!isUniquePtrOffsetZero) return true;
 
-      auto clm = TClass::GetClass(dmTypeName);
-      if (!clm) {
-         Error("CloseStreamerInfoROOTFile", "Class %s is not available.", dmTypeName);
-         return true;
-      }
-
-      // TODO: Is it not clear what situation we are checking for by checking if
-      // the unique_ptr class has any data members.
-      clm->BuildRealData(nullptr, /* istransient = */ true);
-      auto upDms = clm->GetListOfRealData();
-      if (!upDms) {
-         Error("CloseStreamerInfoROOTFile", "Cannot determine unique pointer %s data members.", dmTypeName);
-         return true;
-      }
-
-      if (0 == upDms->GetSize()) {
-         Error("CloseStreamerInfoROOTFile", "Unique pointer %s has zero data members.", dmTypeName);
-         return true;
-      }
-
       // We check if the unique_ptr has a default deleter
       std::vector<std::string> out;
       int i;