diff --git a/Processes/UrQMD/urqmd_xs.cc b/Processes/UrQMD/urqmd_xs.cc
index 33d9e159d74d73553e009da6ff98085c2b17c647..481cca267a8714079ffd9235794266441751c7a4 100644
--- a/Processes/UrQMD/urqmd_xs.cc
+++ b/Processes/UrQMD/urqmd_xs.cc
@@ -8,6 +8,8 @@
  * the license.
  */
 
+// a little helper to dump UrQMD cross-sections
+
 #include <corsika/process/urqmd/UrQMD.h>
 #include <corsika/random/RNGManager.h>
 #include <corsika/units/PhysicalUnits.h>