diff --git a/benchmarks/bugs/bicrystal-medium-bc-2.geo b/benchmarks/bugs/bicrystal-medium-bc-2.geo
index f991b1d99071fceef2c861fe994a9dda1ff50a44..e8e8c896a4ef97a7c5b495ea07dcaf5b6eeb093c 100644
--- a/benchmarks/bugs/bicrystal-medium-bc-2.geo
+++ b/benchmarks/bugs/bicrystal-medium-bc-2.geo
@@ -1,8 +1,10 @@
 
 /*
+mesh 3d incorrectly leaves some 1d elements intact 
 
-mesh 3d leaves hanging (non-connected) nodes on curves
-
+this results in 
+- incorrect final 1d mesh
+- hanging (non-connected) 2nd order nodes on curves
 */
 
 /**