diff --git a/src/bdat.c b/src/bdat.c
index b74c547..8547207 100644
--- a/src/bdat.c
+++ b/src/bdat.c
@@ -87,7 +87,7 @@
       close(session->fd);
       unlink(session->ttmpfile);
 
-      session->fd = 1;
+      session->fd = -1;
    }