diff --git a/lib/krb5/mcache.c b/lib/krb5/mcache.c
index 6d7a5b4b9..c4c7dba5e 100644
--- a/lib/krb5/mcache.c
+++ b/lib/krb5/mcache.c
@@ -401,6 +401,12 @@ mcc_end_cache_get(krb5_context context, krb5_cc_cursor cursor)
     return 0;
 }
 
+/**
+ * Variable containing the MEMORY based credential cache implemention.
+ *
+ * @ingroup krb5_ccache
+ */
+
 const krb5_cc_ops krb5_mcc_ops = {
     "MEMORY",
     mcc_get_name,