1 files changed, 1 insertions, 1 deletions

diff --git a/src/json/json.c b/src/json/json.c
index 51d5c0c72..6d11b4fdd 100644
--- a/src/json/json.c
+++ b/src/json/json.c
@@ -77,7 +77,7 @@ GNUNET_JSON_spec_mark_optional (struct GNUNET_JSON_Specification spec)
 {
   struct GNUNET_JSON_Specification ret = spec;
 
-  ret.is_optional = GNUNET_YES;
+  ret.is_optional = true;
   return ret;
 }