diff --git a/src/include/lwip/opt.h b/src/include/lwip/opt.h
index 8e2be763..70e0d2d9 100644
--- a/src/include/lwip/opt.h
+++ b/src/include/lwip/opt.h
@@ -1900,6 +1900,12 @@
 #define CHAP_DEFTRANSMITS               10      /* max # times to send challenge */
 #endif
 
+/* Default number of times we receive our magic number from the peer
+   before deciding the link is looped-back. */
+#ifndef LCP_DEFLOOPBACKFAIL
+#define LCP_DEFLOOPBACKFAIL             10
+#endif
+
 /* Interval in seconds between keepalive echo requests, 0 to disable. */
 #ifndef LCP_ECHOINTERVAL
 #define LCP_ECHOINTERVAL                0
diff --git a/src/include/netif/ppp/lcp.h b/src/include/netif/ppp/lcp.h
index f832a4ee..8162e257 100644
--- a/src/include/netif/ppp/lcp.h
+++ b/src/include/netif/ppp/lcp.h
@@ -166,9 +166,11 @@ void lcp_sprotrej(ppp_pcb *pcb, u_char *p, int len);    /* send protocol reject
 
 extern const struct protent lcp_protent;
 
+#if 0 /* moved to opt.h */
 /* Default number of times we receive our magic number from the peer
    before deciding the link is looped-back. */
 #define DEFLOOPBACKFAIL	10
+#endif /* moved to opt.h */
 
 #endif /* LCP_H */
 #endif /* PPP_SUPPORT */
diff --git a/src/netif/ppp/ppp.c b/src/netif/ppp/ppp.c
index fe355cae..880bb4e6 100644
--- a/src/netif/ppp/ppp.c
+++ b/src/netif/ppp/ppp.c
@@ -261,7 +261,7 @@ ppp_pcb *ppp_new(void) {
   pcb->settings.chap_timeout_time = CHAP_DEFTIMEOUT;
   pcb->settings.chap_max_transmits = CHAP_DEFTRANSMITS;
 #endif /* CHAP_SUPPPORT */
-  pcb->settings.lcp_loopbackfail = DEFLOOPBACKFAIL;
+  pcb->settings.lcp_loopbackfail = LCP_DEFLOOPBACKFAIL;
   pcb->settings.lcp_echo_interval = LCP_ECHOINTERVAL;
   pcb->settings.lcp_echo_fails = LCP_MAXECHOFAILS;