diff --git a/src/netif/ppp/ppp.c b/src/netif/ppp/ppp.c
index 7d16f7fa..fef080fc 100644
--- a/src/netif/ppp/ppp.c
+++ b/src/netif/ppp/ppp.c
@@ -216,7 +216,6 @@ static err_t ppp_netif_output(struct netif *netif, struct pbuf *pb, u16_t protoc
 /***********************************/
 #if PPP_AUTH_SUPPORT
 void ppp_set_auth(ppp_pcb *pcb, u8_t authtype, const char *user, const char *passwd) {
-  LWIP_ASSERT_CORE_LOCKED();
 #if PAP_SUPPORT
   pcb->settings.refuse_pap = !(authtype & PPPAUTHTYPE_PAP);
 #endif /* PAP_SUPPORT */