diff --git a/source/blender/blenloader/intern/versioning_270.cc b/source/blender/blenloader/intern/versioning_270.cc
index fbc877f3b25..1f274170641 100644
--- a/source/blender/blenloader/intern/versioning_270.cc
+++ b/source/blender/blenloader/intern/versioning_270.cc
@@ -1062,6 +1062,16 @@ void blo_do_versions_270(FileData *fd, Library * /*lib*/, Main *bmain)
     while (a--) {
       LISTBASE_FOREACH (ID *, id, lbarray[a]) {
         id->flag &= LIB_FAKEUSER;
+
+        /* NOTE: This is added in 4.1 code.
+         *
+         * Original commit (3fcf535d2e) forgot to handle embedded IDs. Fortunately, back then, the
+         * only embedded IDs that existed were the NodeTree ones, and the current API to access
+         * them should still be valid on code from 9 years ago. */
+        bNodeTree *node_tree = ntreeFromID(id);
+        if (node_tree) {
+          node_tree->id.flag &= LIB_FAKEUSER;
+        }
       }
     }
   }