diff --git a/corsika/framework/utility/SaveBoostHistogram.hpp b/corsika/framework/utility/SaveBoostHistogram.hpp
index c99ab54bbe058a0d3445454dfe478312e1037174..90a5621bd54715964a117b041380d20470cf4af3 100644
--- a/corsika/framework/utility/SaveBoostHistogram.hpp
+++ b/corsika/framework/utility/SaveBoostHistogram.hpp
@@ -19,6 +19,9 @@ namespace corsika {
    *
    * Note that this function makes a temporary, dense copy of the histogram, which could
    * be an issue for huge sizes (e.g. for high dimensions)
+   *
+   * @param overwrite silently overwrite existing files if true, otherwise throw
+   * runtime_error
    */
   template <class Axes, class Storage>
   inline void save_hist(boost::histogram::histogram<Axes, Storage> const& h,