diff --git a/corsika/detail/modules/sibyll/NuclearInteraction.inl b/corsika/detail/modules/sibyll/NuclearInteraction.inl
index 52296fbd423199e5398e45d0e72ed53ae2e01622..e5d8662fbab3fec61f00846e2dfd1511c414acce 100644
--- a/corsika/detail/modules/sibyll/NuclearInteraction.inl
+++ b/corsika/detail/modules/sibyll/NuclearInteraction.inl
@@ -577,7 +577,7 @@ namespace corsika::sibyll {
     }
 
     // add inelastic interactions
-    std::cout << "calculate inelastic nucleon-nucleon interactions.." << std::endl;
+    CORSIKA_LOG_DEBUG("calculate inelastic nucleon-nucleon interactions..");
     for (int j = 0; j < nInelNucleons; ++j) {
       // TODO: sample neutron or proton
       auto pCode = Code::Proton;