diff --git a/Example/Element/T2D2E.supan b/Example/Element/T2D2E.supan
index 0ca160ff0..fcafcad93 100644
--- a/Example/Element/T2D2E.supan
+++ b/Example/Element/T2D2E.supan
@@ -7,6 +7,9 @@ material MPF 1 100 300 .4
 
 element T2D2 1 1 2 1 100 0 0 0 10
 
+element T2D2 4 1 4 1 100 # wrong node
+element T2D2 5 1 2 2 100 # wrong material
+
 fix 1 1 1
 fix 2 2 1 2