diff --git a/benchmarks/3d/sph2.geo b/benchmarks/3d/sph2.geo
index 7b119691cfe9abf1385cb3e690abc538fb834381..ab73fc505fa930f995241473c8b977b97d0fdbd4 100644
--- a/benchmarks/3d/sph2.geo
+++ b/benchmarks/3d/sph2.geo
@@ -3,6 +3,7 @@ dext = 1;
 dint = 0.2;
 angle = Pi/4;
 nbdiv = 2;
+Mesh.ElementOrder = 2;
 
 Point(1) = {0,0,0,lc};  
 Point(2) = {dint,0,0,lc};