diff --git a/benchmarks/bugs/mean.geo b/benchmarks/bugs/mean.geo
new file mode 100644
index 0000000000000000000000000000000000000000..33d2532880b1d5922d6cd6269ebcd7ea53035a4e
--- /dev/null
+++ b/benchmarks/bugs/mean.geo
@@ -0,0 +1,14 @@
+lambda = 0.1 ;
+larg = 0.05 ;
+long = 0.5 ;
+nbr_pas = 12 ; 
+nbr_pas_tot = long/lambda*nbr_pas ;
+ampl = 0.01 ;
+lc1 = 0.005 ;
+For tt In {0:nbr_pas_tot} 
+  Point(1000+tt) = { tt*lambda/nbr_pas , 0. , ampl*Sin(2*Pi*tt/nbr_pas) , lc1 } ;
+  tab_pt_1[tt] = 1000 + tt ;
+  EndFor 
+Spline(1000) = tab_pt_1[];
+Extrude Line {1000 , { 0., larg , 0. } } ; 
+Translate {0,0.15,0} { Duplicata { Surface{1004} ; } }