diff --git a/lib/vtls/nss.c b/lib/vtls/nss.c
index 7a5213b2bd..5e0cd2414c 100644
--- a/lib/vtls/nss.c
+++ b/lib/vtls/nss.c
@@ -1423,7 +1423,7 @@ static int Curl_nss_init(void)
 {
   /* curl_global_init() is not thread-safe so this test is ok */
   if(nss_initlock == NULL) {
-    PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 256);
+    PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
     nss_initlock = PR_NewLock();
     nss_crllock = PR_NewLock();
     nss_findslot_lock = PR_NewLock();