diff --git a/tests/framework/testIntLengthModifyingProcess.cpp b/tests/framework/testIntLengthModifyingProcess.cpp
index 3748609b3ab9adda25658f155c1d346ff4db2751..93e2072aff186ffd14d15e363f36abf0430b10fd 100644
--- a/tests/framework/testIntLengthModifyingProcess.cpp
+++ b/tests/framework/testIntLengthModifyingProcess.cpp
@@ -13,7 +13,7 @@
 
 using namespace corsika;
 
-struct DummyProcess {
+struct DummyProcess : public InteractionProcess<DummyProcess> {
   int id{0};
 
   template <typename TParticle>