1 files changed, 1 insertions, 0 deletions

diff --git a/src/mesh/mesh_api.c b/src/mesh/mesh_api.c
index 72428790e..971f491d2 100644
--- a/src/mesh/mesh_api.c
+++ b/src/mesh/mesh_api.c
@@ -166,6 +166,7 @@ core_startup (void *cls,
 static size_t
 send_hello_message (void *cls, size_t size, void *buf)
 {
+  if (cls == NULL) return 0;
   struct GNUNET_MESH_Handle *handle = cls;
   struct GNUNET_MessageHeader *hdr = buf;