1 files changed, 6 insertions, 0 deletions

diff --git a/src/transport/plugin_transport_wlan.c b/src/transport/plugin_transport_wlan.c
index 42ed771f4..013020680 100644
--- a/src/transport/plugin_transport_wlan.c
+++ b/src/transport/plugin_transport_wlan.c
@@ -812,6 +812,12 @@ transmit_fragment (void *cls,
   size_t size;
   uint16_t msize;
 
+  if (NULL == endpoint)
+  {
+        GNUNET_break (0);
+        return;
+  }
+
   msize = ntohs (hdr->size);
   size = sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage) + msize;
   {