1 files changed, 7 insertions, 1 deletions
diff --git a/ctrl/facemgr/examples/updownsrv/updownsrv.c b/ctrl/facemgr/examples/updownsrv/updownsrv.c
index e10247860..5d624583b 100644
--- a/ctrl/facemgr/examples/updownsrv/updownsrv.c
+++ b/ctrl/facemgr/examples/updownsrv/updownsrv.c
@@ -112,6 +112,12 @@ int main() {
     fd = create_unix_server(UNIX_PATH);
     if (fd < 0)
         exit(EXIT_FAILURE);
+
+    if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) {
+        perror("fcntl");
+        exit(EXIT_FAILURE);
+    }
+
     FD_SET (fd, &active_fd_set);
 
     /* Create timer */
@@ -121,7 +127,7 @@ int main() {
         exit(EXIT_FAILURE);
     }
 
-    if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) {
+    if (fcntl(tfd, F_SETFL, O_NONBLOCK) < 0) {
         perror("fcntl");
         exit(EXIT_FAILURE);
     }