diff --git a/Documentation/Examples/cascade_example.cc b/Documentation/Examples/cascade_example.cc
index 89dc1f68b771981a1ac564b34ea097de41b0df8d..f9d1e95a83aa38ed0475c06850698d2b867f6f99 100644
--- a/Documentation/Examples/cascade_example.cc
+++ b/Documentation/Examples/cascade_example.cc
@@ -42,7 +42,6 @@ using boost::typeindex::type_id_with_cvr;
 #include <iostream>
 #include <limits>
 #include <typeinfo>
-#include <set>
 
 using namespace corsika;
 using namespace corsika::process;