diff --git a/examples/ahead/nonoverlap/clamped/dynamic/clamped-1.yaml b/examples/ahead/nonoverlap/clamped/dynamic/clamped-1.yaml
index 54a1741..1ffb31c 100644
--- a/examples/ahead/nonoverlap/clamped/dynamic/clamped-1.yaml
+++ b/examples/ahead/nonoverlap/clamped/dynamic/clamped-1.yaml
@@ -7,10 +7,9 @@ model:
     blocks:
       coarse: hyperelastic
     hyperelastic:
-      #model: neohookean
       model: neohookean
       elastic modulus: 1.0e+09
-      Poisson's ratio: 0.25
+      Poisson's ratio: 0.0
       density: 1000.0
 time integrator:
   type: Newmark
diff --git a/examples/ahead/nonoverlap/clamped/dynamic/clamped-2.yaml b/examples/ahead/nonoverlap/clamped/dynamic/clamped-2.yaml
index 647bec0..2268aea 100644
--- a/examples/ahead/nonoverlap/clamped/dynamic/clamped-2.yaml
+++ b/examples/ahead/nonoverlap/clamped/dynamic/clamped-2.yaml
@@ -7,10 +7,9 @@ model:
     blocks:
       fine: hyperelastic
     hyperelastic:
-            #model: neohookean
       model: neohookean
       elastic modulus: 1.0e+09
-      Poisson's ratio: 0.25
+      Poisson's ratio: 0.0
       density: 1000.0
 time integrator:
   type: Newmark