diff --git a/Linear_cell_complex/test/Linear_cell_complex/Linear_cell_complex_2_test.cpp b/Linear_cell_complex/test/Linear_cell_complex/Linear_cell_complex_2_test.cpp
index 28195f35354..e95db49c875 100644
--- a/Linear_cell_complex/test/Linear_cell_complex/Linear_cell_complex_2_test.cpp
+++ b/Linear_cell_complex/test/Linear_cell_complex/Linear_cell_complex_2_test.cpp
@@ -54,6 +54,7 @@ struct Myitems_2b
 {
 #ifdef USE_COMPACT_CONTAINER_WITH_INDEX
   typedef CGAL::Tag_true Use_index;
+  using Index_type=std::uint16_t;
 #endif
   template <class LCC>
   struct Dart_wrapper
diff --git a/Linear_cell_complex/test/Linear_cell_complex/Linear_cell_complex_3_test.cpp b/Linear_cell_complex/test/Linear_cell_complex/Linear_cell_complex_3_test.cpp
index c1d6eb4cdfe..7f67127e926 100644
--- a/Linear_cell_complex/test/Linear_cell_complex/Linear_cell_complex_3_test.cpp
+++ b/Linear_cell_complex/test/Linear_cell_complex/Linear_cell_complex_3_test.cpp
@@ -60,6 +60,7 @@ struct Myitems_3b
 {
 #ifdef USE_COMPACT_CONTAINER_WITH_INDEX
   typedef CGAL::Tag_true Use_index;
+  using Index_type=std::uint32_t;
 #endif
   template <class LCC>
   struct Dart_wrapper
diff --git a/Linear_cell_complex/test/Linear_cell_complex/Linear_cell_complex_4_test.cpp b/Linear_cell_complex/test/Linear_cell_complex/Linear_cell_complex_4_test.cpp
index 737e6b965ba..3b99a61a931 100644
--- a/Linear_cell_complex/test/Linear_cell_complex/Linear_cell_complex_4_test.cpp
+++ b/Linear_cell_complex/test/Linear_cell_complex/Linear_cell_complex_4_test.cpp
@@ -57,6 +57,7 @@ struct Myitems_4b
 {
 #ifdef USE_COMPACT_CONTAINER_WITH_INDEX
   typedef CGAL::Tag_true Use_index;
+  using Index_type=std::uint64_t;
 #endif
   template <class LCC>
   struct Dart_wrapper