diff --git a/criu/sk-queue.c b/criu/sk-queue.c
index f38d8972c..ae19bbc20 100644
--- a/criu/sk-queue.c
+++ b/criu/sk-queue.c
@@ -160,7 +160,9 @@ static int dump_sk_creds(struct ucred *ucred, SkPacketEntry *pe, int flags)
 		int ret;
 
 		/* Does a process exist? */
-		if (pidns) {
+		if (ucred->pid == 0) {
+			ret = 0;
+		} else if (pidns) {
 			snprintf(path, sizeof(path), "%d", ucred->pid);
 			ret = faccessat(get_service_fd(CR_PROC_FD_OFF), path, R_OK, 0);
 		} else {
@@ -389,7 +391,7 @@ static int send_one_pkt(int fd, struct sk_packet *pkt)
 	 * boundaries messages should be saved.
 	 */
 
-	if (entry->ucred) {
+	if (entry->ucred && entry->ucred->pid) {
 		struct ucred *ucred;
 		struct cmsghdr *ch;