diff --git a/sched/task/task_spawnparms.c b/sched/task/task_spawnparms.c
index 6db333cde3..cf231b78c9 100644
--- a/sched/task/task_spawnparms.c
+++ b/sched/task/task_spawnparms.c
@@ -149,6 +149,17 @@ int spawn_execattrs(pid_t pid, FAR const posix_spawnattr_t *attr)
    * return an error value, then we would also have to stop the task.
    */
 
+  /* Firstly, set the signal mask if requested to do so */
+
+  if ((attr->flags & POSIX_SPAWN_SETSIGMASK) != 0)
+    {
+      FAR struct tcb_s *tcb = nxsched_get_tcb(pid);
+      if (tcb)
+        {
+          tcb->sigprocmask = attr->sigmask;
+        }
+    }
+
   /* If we are only setting the priority, then call sched_setparm()
    * to set the priority of the of the new task.
    */