diff --git a/Benchmark_instances/dont_submit b/Benchmark_instances/dont_submit
index b81babb87ff..e440ac75904 100644
--- a/Benchmark_instances/dont_submit
+++ b/Benchmark_instances/dont_submit
@@ -1,4 +1,2 @@
-description.txt
 developer_scripts
-maintainer  
 out_html
diff --git a/Circular_kernel_2/dont_submit b/Circular_kernel_2/dont_submit
index ff30c2ba596..eea776077d3 100644
--- a/Circular_kernel_2/dont_submit
+++ b/Circular_kernel_2/dont_submit
@@ -4,7 +4,7 @@ Benchmarks
 include/CGAL/Filtered_hexagon_circular_kernel_2.h
 include/CGAL/Filtered_hexagon_circular_kernel_2/
 Arr_circular_arc_traits_checker.h
-Arr_circular_arc_traits_tracer.h  
+Arr_circular_arc_traits_tracer.h
 Lazy_circular_kernel_2.h
 Lazy_circular_kernel_constructions.h
 Lazy_Circular_kernel_arrangement.cpp