1 files changed, 3 insertions, 0 deletions

diff --git a/src/set/gnunet-service-set.h b/src/set/gnunet-service-set.h
index fb079d03f..c3650aa9b 100644
--- a/src/set/gnunet-service-set.h
+++ b/src/set/gnunet-service-set.h
@@ -323,6 +323,9 @@ struct ElementEntry
    */
   struct MutationEvent *mutations;
 
+  /**
+   * Number of elements in the array @a mutations.
+   */
   unsigned int mutations_size;
 
   /**