1 files changed, 5 insertions, 1 deletions

diff --git a/src/fs/fs_tree.c b/src/fs/fs_tree.c
index 3a697c539..b27fea57f 100644
--- a/src/fs/fs_tree.c
+++ b/src/fs/fs_tree.c
@@ -429,7 +429,11 @@ void
 GNUNET_FS_tree_encoder_finish (struct GNUNET_FS_TreeEncoder *te,
                                struct GNUNET_FS_Uri **uri, char **emsg)
 {
-  (void) te->reader (te->cls, UINT64_MAX, 0, 0, NULL);
+  if (NULL != te->reader)
+  {
+    (void) te->reader (te->cls, UINT64_MAX, 0, 0, NULL);
+    te->reader =  NULL;
+  }
   GNUNET_assert (GNUNET_NO == te->in_next);
   if (uri != NULL)
     *uri = te->uri;