diff --git a/examples/MSC.Marc/material.config b/examples/MSC.Marc/material.config
index 0fa31565d..849a62dba 100644
--- a/examples/MSC.Marc/material.config
+++ b/examples/MSC.Marc/material.config
@@ -563,8 +563,8 @@ plasticity              phenopowerlaw
 (output)                totalvolfrac
 
 lattice_structure       fcc
-Nslip                   12  0  0  0              # per family
-Ntwin                    0  0  0  0              # per family
+Nslip                   12 # per family
+Ntwin                    0 # per family
 
 c11                     106.75e9
 c12                     60.41e9