diff --git a/apps/participation/management/commands/fix_matrix_channels.py b/apps/participation/management/commands/fix_matrix_channels.py
index d76f807..c463bcf 100644
--- a/apps/participation/management/commands/fix_matrix_channels.py
+++ b/apps/participation/management/commands/fix_matrix_channels.py
@@ -443,5 +443,33 @@ class Command(BaseCommand):
                                         f"@{participant.matrix_username}:tfjm.org")
                     await Matrix.set_room_power_level(f"#equipe-{team.trigram.lower()}:tfjm.org",
                                                       f"@{participant.matrix_username}:tfjm.org", 50)
+
+            # Manage channels to discuss about problems
+            for i in range(9):
+                self.stdout.write(f"Create channel for problem {i}...")
+                if not await Matrix.resolve_room_alias(f"#mec-{i}:tfjm.org"):
+                    await Matrix.create_room(
+                        visibility=RoomVisibility.public,
+                        alias=f"mec-{i}",
+                        name=f"Mise en commun - {'Général' if i == 0 else f'Problème {i}'}",
+                        topic=f"Discussion autour des problèmes",
+                        federate=False,
+                        preset=RoomPreset.public_chat,
+                        invite=[f"@{registration.matrix_username}:tfjm.org"
+                                for registration in Registration.objects.all()],
+                        power_level_override={
+                            f"@{registration.matrix_username}:tfjm.org": (95 if registration.is_admin else 50)
+                            for registration in VolunteerRegistration.objects.all()
+                        },
+                    )
+                    await Matrix.set_room_avatar(f"#mec-{i}:tfjm.org", avatar_uri)
+
+                for registration in Registration.objects.all():
+                    await Matrix.invite(f"#mec-{i}:tfjm.org", registration.matrix_username)
+
+                for registration in VolunteerRegistration.objects.all():
+                    await Matrix.set_room_power_level(f"#mec-{i}:tfjm.org",
+                                                      f"@{registration.matrix_username}:tfjm.org",
+                                                      95 if registration.is_admin else 50)
     
         asyncio.get_event_loop().run_until_complete(main())