diff --git a/examples/ASPHERE/poly/in.poly b/examples/ASPHERE/poly/in.poly
index 77df095e1518192862065a8d05671f4bd0ab20e4..3496a774bbb05af9c1b2627f502bc57f4c98e471 100644
--- a/examples/ASPHERE/poly/in.poly
+++ b/examples/ASPHERE/poly/in.poly
@@ -62,6 +62,7 @@ pair_coeff	3 3 1.0 1.5
 pair_coeff	1 4 0.0 1.0 0.5
 pair_coeff	2 4 0.0 1.0 1.0
 pair_coeff	3 4 0.0 1.0 0.75
+pair_coeff	4 4 0.0 1.0 0.0
 
 delete_atoms	overlap 1.0 small big
 
diff --git a/examples/ASPHERE/poly/in.poly.mp b/examples/ASPHERE/poly/in.poly.mp
index 5ced616e7c664fc756626f3ddf6d4907c1d39e8f..1c6a1faee36f0395a494131a8fe98faa55be19a7 100644
--- a/examples/ASPHERE/poly/in.poly.mp
+++ b/examples/ASPHERE/poly/in.poly.mp
@@ -62,6 +62,7 @@ pair_coeff	3 3 1.0 1.5
 pair_coeff	1 4 0.0 1.0 0.5
 pair_coeff	2 4 0.0 1.0 1.0
 pair_coeff	3 4 0.0 1.0 0.75
+pair_coeff	4 4 0.0 1.0 0.0
 
 delete_atoms	overlap 1.0 small big