diff --git a/Documentation/Examples/cascade_example.cc b/Documentation/Examples/cascade_example.cc
index 2877990e99d0d8a9a120ca3f792e8ea50c66f85d..f6d04cfaf745817614ec9ae200b58d9591781e2b 100644
--- a/Documentation/Examples/cascade_example.cc
+++ b/Documentation/Examples/cascade_example.cc
@@ -226,7 +226,7 @@ int main() {
   // setup particle stack, and add primary particle
   setup::Stack stack;
   stack.Clear();
-  const hep::EnergyType E0 = 1000_GeV;
+  const hep::EnergyType E0 = 100_GeV;
   double theta = 45.;
   double phi = 20.;
   {