diff --git a/include/unotools/saveopt.hxx b/include/unotools/saveopt.hxx
index 7c4d3adc0dc8..7c189534d2da 100644
--- a/include/unotools/saveopt.hxx
+++ b/include/unotools/saveopt.hxx
@@ -58,7 +58,7 @@ public:
      */
     enum ODFDefaultVersion
     {
-        ODFVER_UNKNOWN = 0, // unknown
+        ODFVER_UNKNOWN = 0, // unknown - very dubious, avoid using
         ODFVER_010 = 1,         // ODF 1.0
         ODFVER_011 = 2,         // ODF 1.1
         DO_NOT_USE = 3,         // Do not use this, only here for compatibility with pre OOo 3.2 configuration
diff --git a/officecfg/registry/schema/org/openoffice/Office/Common.xcs b/officecfg/registry/schema/org/openoffice/Office/Common.xcs
index 675f173e5b36..dbe38f526f05 100644
--- a/officecfg/registry/schema/org/openoffice/Office/Common.xcs
+++ b/officecfg/registry/schema/org/openoffice/Office/Common.xcs
@@ -2478,6 +2478,11 @@
                 <desc>ODFVER_012</desc>
               </info>
             </enumeration>
+            <enumeration oor:value="8">
+              <info>
+                <desc>ODFVER_012_EXT_COMPAT</desc>
+              </info>
+            </enumeration>
             <enumeration oor:value="3">
               <info>
                 <desc>ODFVER_LATEST</desc>
diff --git a/unotools/source/config/saveopt.cxx b/unotools/source/config/saveopt.cxx
index 650ec5586b8d..6d6b39743eb9 100644
--- a/unotools/source/config/saveopt.cxx
+++ b/unotools/source/config/saveopt.cxx
@@ -322,7 +322,7 @@ bool SvtSaveOptions_Impl::IsReadOnly( SvtSaveOptions::EOption eOption ) const
             bReadOnly = bROLoadDocPrinter;
             break;
         case SvtSaveOptions::EOption::OdfDefaultVersion :
-            bReadOnly = bROLoadDocPrinter;
+            bReadOnly = bROODFDefaultVersion;
             break;
     }
     return bReadOnly;
@@ -932,7 +932,9 @@ void SvtSaveOptions::SetODFDefaultVersion( SvtSaveOptions::ODFDefaultVersion eVe
 
 SvtSaveOptions::ODFDefaultVersion SvtSaveOptions::GetODFDefaultVersion() const
 {
-    return pImp->pSaveOpt->GetODFDefaultVersion();
+    auto const nRet = pImp->pSaveOpt->GetODFDefaultVersion();
+    SAL_WARN_IF(nRet == ODFVER_UNKNOWN, "unotools.config", "DefaultVersion is ODFVER_UNKNOWN?");
+    return (nRet == ODFVER_UNKNOWN) ? ODFVER_LATEST : nRet;
 }
 
 SvtSaveOptions::ODFSaneDefaultVersion SvtSaveOptions::GetODFSaneDefaultVersion() const