diff --git a/DDG4/hepmc/HepMC3FileReader.cpp b/DDG4/hepmc/HepMC3FileReader.cpp
index 67fa3fd0fe4d0e19037dce59d3fbf4b58d7b5acd..2a9a47b2adc2443f0ec2051ca278f5f2fe820da3 100644
--- a/DDG4/hepmc/HepMC3FileReader.cpp
+++ b/DDG4/hepmc/HepMC3FileReader.cpp
@@ -16,7 +16,10 @@
   \package HepMC3FileReader
  * \brief Plugin to read HepMC3 files
  *
- And here we can put a longer description, parameters, examples...
+ * The HepMC3 File reader uses the HepMC3 Reader Factory to open any HepMC3 compatible file.
+ *
+ * However, it was only tested on HepMC3 ascii files produced by Whizard 2.8.2, so please use it carefully, and validate
+ * its conversion carefully before extensive usage.
  *
 @}
  */