diff --git a/source/agglomeration_handler.cc b/source/agglomeration_handler.cc
index 16e9f84b..a0a86262 100644
--- a/source/agglomeration_handler.cc
+++ b/source/agglomeration_handler.cc
@@ -1033,8 +1033,8 @@ namespace dealii
                                            .visited_cell_and_faces))
                               {
                                 handler.polytope_cache
-                                  .interface[{current_polytope_id,
-                                              neighbor_polytope_id}]
+                                  .interface[{
+                                  current_polytope_id, neighbor_polytope_id}]
                                   .emplace_back(cell, f);
 
                                 handler.polytope_cache.visited_cell_and_faces
@@ -1048,8 +1048,8 @@ namespace dealii
                                            .visited_cell_and_faces))
                               {
                                 handler.polytope_cache
-                                  .interface[{neighbor_polytope_id,
-                                              current_polytope_id}]
+                                  .interface[{
+                                  neighbor_polytope_id, current_polytope_id}]
                                   .emplace_back(neighboring_cell, nof);
 
                                 handler.polytope_cache.visited_cell_and_faces
@@ -1100,8 +1100,8 @@ namespace dealii
                                            .visited_cell_and_faces))
                               {
                                 handler.polytope_cache
-                                  .interface[{current_polytope_id,
-                                              neighbor_polytope_id}]
+                                  .interface[{
+                                  current_polytope_id, neighbor_polytope_id}]
                                   .emplace_back(cell, f);
 
                                 handler.polytope_cache.visited_cell_and_faces
@@ -1114,8 +1114,8 @@ namespace dealii
                                            .visited_cell_and_faces))
                               {
                                 handler.polytope_cache
-                                  .interface[{neighbor_polytope_id,
-                                              current_polytope_id}]
+                                  .interface[{
+                                  neighbor_polytope_id, current_polytope_id}]
                                   .emplace_back(neighboring_cell, nof);
 
                                 handler.polytope_cache.visited_cell_and_faces
@@ -1193,8 +1193,8 @@ namespace dealii
                               handler.polytope_cache.visited_cell_and_faces_id))
                           {
                             handler.polytope_cache
-                              .interface[{current_polytope_id,
-                                          check_neigh_polytope_id}]
+                              .interface[{
+                              current_polytope_id, check_neigh_polytope_id}]
                               .emplace_back(cell, f);
 
                             // std::cout << "ADDED ("
@@ -1215,8 +1215,8 @@ namespace dealii
                               handler.polytope_cache.visited_cell_and_faces_id))
                           {
                             handler.polytope_cache
-                              .interface[{check_neigh_polytope_id,
-                                          current_polytope_id}]
+                              .interface[{
+                              check_neigh_polytope_id, current_polytope_id}]
                               .emplace_back(neighboring_cell, nof);
 
                             handler.polytope_cache.visited_cell_and_faces_id
@@ -1264,7 +1264,8 @@ namespace dealii
                         std::end(handler.polytope_cache.visited_cell_and_faces))
                       {
                         handler.polytope_cache
-                          .interface[{current_polytope_id, current_polytope_id}]
+                          .interface[{
+                          current_polytope_id, current_polytope_id}]
                           .emplace_back(cell, f);
 
                         handler.polytope_cache.visited_cell_and_faces.insert(