diff --git a/Constrained_triangulation_3/test/Constrained_triangulation_3/Thingi10k-CDT.cmake b/Constrained_triangulation_3/test/Constrained_triangulation_3/Thingi10k-CDT.cmake
index dcfef44b8c2..d53f0c247fa 100644
--- a/Constrained_triangulation_3/test/Constrained_triangulation_3/Thingi10k-CDT.cmake
+++ b/Constrained_triangulation_3/test/Constrained_triangulation_3/Thingi10k-CDT.cmake
@@ -6,7 +6,9 @@ find_path(THINGI10K_DATA_DIR NAME 132423.stl
   PATH_SUFFIXES Downloads/Thingi10K/raw_meshes
   NO_DEFAULT_PATH
   NO_CMAKE_FIND_ROOT_PATH
+  REQUIRED
   )
+
 include(./thingi10k_max_10k_solid.cmake)
 
 set(thingi10k_BLACKLIST_WITHOUT_MERGE_FACETS
diff --git a/TDS_3/include/CGAL/Triangulation_simplex_3.h b/TDS_3/include/CGAL/Triangulation_simplex_3.h
index 252869bf523..400fda843a1 100644
--- a/TDS_3/include/CGAL/Triangulation_simplex_3.h
+++ b/TDS_3/include/CGAL/Triangulation_simplex_3.h
@@ -294,9 +294,7 @@ struct Output_rep<Triangulation_simplex_3<TriangulationDataStructure_3>, Tag >
   Simplex simplex;
   Tag tag;
 
-  Output_rep(Simplex s)
-    : simplex(s)
-  {}
+  Output_rep(const Simplex& s, Tag t = {}) : simplex(s), tag(t) {}
 
   std::ostream& operator()(std::ostream& os) const {
     auto display_vert = [&](auto v) {