1 files changed, 2 insertions, 0 deletions

diff --git a/src/ats/ats_api_scheduling.c b/src/ats/ats_api_scheduling.c
index c2280f70b..b61d320a7 100644
--- a/src/ats/ats_api_scheduling.c
+++ b/src/ats/ats_api_scheduling.c
@@ -269,6 +269,8 @@ find_session (struct GNUNET_ATS_SchedulingHandle *sh,
     GNUNET_break (0);
     return NULL;
   }
+  if (session_id == 0)
+    return NULL;
   GNUNET_assert (0 == memcmp (peer,
                               &sh->session_array[session_id].peer,
                               sizeof (struct GNUNET_PeerIdentity)));