diff --git a/src/include/netif/ppp/mppe.h b/src/include/netif/ppp/mppe.h
index 6bd22f80..4fa0274f 100644
--- a/src/include/netif/ppp/mppe.h
+++ b/src/include/netif/ppp/mppe.h
@@ -152,12 +152,10 @@ struct ppp_mppe_state {
 	int debug;
 };
 
-int mppe_comp_init(struct ppp_mppe_state *state, unsigned char *options, int optlen, int unit,
-	       int hdrlen, int debug);
+int mppe_init(struct ppp_mppe_state *state, unsigned char *options, int optlen,
+	int unit, int debug, const char *debugstr);
 void mppe_comp_reset(struct ppp_mppe_state *state);
 err_t mppe_compress(struct ppp_mppe_state *state, struct pbuf **pb, u16_t protocol);
-int mppe_decomp_init(struct ppp_mppe_state *state, unsigned char *options, int optlen, int unit,
-		 int hdrlen, int mru, int debug);
 void mppe_decomp_reset(struct ppp_mppe_state *state);
 err_t mppe_decompress(struct ppp_mppe_state *state, struct pbuf **pb);
 void mppe_incomp(struct ppp_mppe_state *state, unsigned char *ibuf, int icnt);
diff --git a/src/netif/ppp/mppe.c b/src/netif/ppp/mppe.c
index 1b5e53f2..be8d3df7 100644
--- a/src/netif/ppp/mppe.c
+++ b/src/netif/ppp/mppe.c
@@ -116,7 +116,7 @@ static void mppe_rekey(struct ppp_mppe_state * state, int initial_key)
 /*
  * Initialize (de)compressor state.
  */
-static int
+int
 mppe_init(struct ppp_mppe_state *state, unsigned char *options, int optlen, int unit, int debug,
 	  const char *debugstr)
 {
@@ -184,14 +184,6 @@ mppe_init(struct ppp_mppe_state *state, unsigned char *options, int optlen, int
 	return 1;
 }
 
-int
-mppe_comp_init(struct ppp_mppe_state *state, unsigned char *options, int optlen, int unit,
-	       int hdrlen, int debug)
-{
-	LWIP_UNUSED_ARG(hdrlen);
-	return mppe_init(state, options, optlen, unit, debug, "mppe_comp_init");
-}
-
 /*
  * We received a CCP Reset-Request (actually, we are sending a Reset-Ack),
  * tell the compressor to rekey.  Note that we MUST NOT rekey for
@@ -265,15 +257,6 @@ mppe_compress(struct ppp_mppe_state *state, struct pbuf **pb, u16_t protocol)
 	return ERR_OK;
 }
 
-int
-mppe_decomp_init(struct ppp_mppe_state *state, unsigned char *options, int optlen, int unit,
-		 int hdrlen, int mru, int debug)
-{
-	LWIP_UNUSED_ARG(hdrlen);
-	LWIP_UNUSED_ARG(mru);
-	return mppe_init(state, options, optlen, unit, debug, "mppe_decomp_init");
-}
-
 /*
  * We received a CCP Reset-Ack.  Just ignore it.
  */