diff --git a/kernel/signal.c b/kernel/signal.c
index cb6ec7054eee..dd770e68faee 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -684,12 +684,13 @@ static int dequeue_synchronous_signal(kernel_siginfo_t *info)
 		return 0;
 
 	/*
-	 * Return the first synchronous signal in the queue.
+	 * Return the first unblocked synchronous signal in the queue.
 	 */
 	list_for_each_entry(q, &pending->list, list) {
 		/* Synchronous signals have a positive si_code */
 		if ((q->info.si_code > SI_USER) &&
-		    (sigmask(q->info.si_signo) & SYNCHRONOUS_MASK)) {
+		    (sigmask(q->info.si_signo) & SYNCHRONOUS_MASK) &&
+		    !sigismember(&tsk->blocked, q->info.si_signo)) {
 			sync = q;
 			goto next;
 		}