diff --git a/src/netif/ppp/eap.c b/src/netif/ppp/eap.c
index 0b1088ee..78faf0c7 100644
--- a/src/netif/ppp/eap.c
+++ b/src/netif/ppp/eap.c
@@ -694,7 +694,7 @@ eap_state *esp;
 	}
 
 	/* FIXME: improve buffer size */
-	p = pbuf_alloc(PBUF_RAW, (u16_t)(PPP_MRU+PPP_HDRLEN), PBUF_RAM);
+	p = pbuf_alloc(PBUF_RAW, (u16_t)(pcb->peer_mru+PPP_HDRLEN), PBUF_RAM);
 	if(NULL == p)
 		return;
 
diff --git a/src/netif/ppp/fsm.c b/src/netif/ppp/fsm.c
index bde8965b..ad524a37 100644
--- a/src/netif/ppp/fsm.c
+++ b/src/netif/ppp/fsm.c
@@ -707,7 +707,7 @@ static void fsm_sconfreq(fsm *f, int retransmit) {
     f->seen_ack = 0;
 
     /* FIXME: improve buffer size */
-    p = pbuf_alloc(PBUF_RAW, (u16_t)(PPP_MRU+PPP_HDRLEN), PBUF_RAM);
+    p = pbuf_alloc(PBUF_RAW, (u16_t)(pcb->peer_mru+PPP_HDRLEN), PBUF_RAM);
     if(NULL == p)
         return;
 
diff --git a/src/netif/ppp/ppp.h b/src/netif/ppp/ppp.h
index ffd94ef1..48cd8d9d 100644
--- a/src/netif/ppp/ppp.h
+++ b/src/netif/ppp/ppp.h
@@ -318,7 +318,7 @@ struct ppp_pcb_s {
   eap_state eap;
 #endif /* EAP_SUPPORT */
 
-  int peer_mru;         /* currently negotiated peer MRU (per unit) */
+  int peer_mru;         /* currently negotiated peer MRU */
 
   fsm lcp_fsm;          /* LCP fsm structure */
   lcp_options lcp_wantoptions;    /* Options that we want to request */