diff --git a/src/include/netif/ppp/magic.h b/src/include/netif/ppp/magic.h
index dd99e483..678ff724 100644
--- a/src/include/netif/ppp/magic.h
+++ b/src/include/netif/ppp/magic.h
@@ -110,7 +110,7 @@ u32_t magic(void);	/* Returns the next magic number */
  * least some degree.  Also, it's important to get a good seed before
  * the first use.
  */
-void random_bytes(unsigned char *buf, u32_t buf_len);
+void magic_random_bytes(unsigned char *buf, u32_t buf_len);
 
 /*
  * Return a new random number between 0 and (2^pow)-1 included.
diff --git a/src/netif/ppp/chap-md5.c b/src/netif/ppp/chap-md5.c
index f1e8dc46..842a449b 100644
--- a/src/netif/ppp/chap-md5.c
+++ b/src/netif/ppp/chap-md5.c
@@ -60,7 +60,7 @@ static void chap_md5_generate_challenge(ppp_pcb *pcb, unsigned char *cp) {
 
 	clen = MD5_MIN_CHALLENGE + magic_pow(MD5_MIN_MAX_POWER_OF_TWO_CHALLENGE);
 	*cp++ = clen;
-	random_bytes(cp, clen);
+	magic_random_bytes(cp, clen);
 }
 
 static int chap_md5_verify_response(ppp_pcb *pcb, int id, const char *name,
diff --git a/src/netif/ppp/chap_ms.c b/src/netif/ppp/chap_ms.c
index 55b3caa4..0b296c28 100644
--- a/src/netif/ppp/chap_ms.c
+++ b/src/netif/ppp/chap_ms.c
@@ -249,7 +249,7 @@ static void chapms_generate_challenge(ppp_pcb *pcb, unsigned char *challenge) {
 		memcpy(challenge, mschap_challenge, 8);
 	else
 #endif
-		random_bytes(challenge, 8);
+		magic_random_bytes(challenge, 8);
 }
 
 static void chapms2_generate_challenge(ppp_pcb *pcb, unsigned char *challenge) {
@@ -261,7 +261,7 @@ static void chapms2_generate_challenge(ppp_pcb *pcb, unsigned char *challenge) {
 		memcpy(challenge, mschap_challenge, 16);
 	else
 #endif
-		random_bytes(challenge, 16);
+		magic_random_bytes(challenge, 16);
 }
 
 static int chapms_verify_response(ppp_pcb *pcb, int id, const char *name,
diff --git a/src/netif/ppp/magic.c b/src/netif/ppp/magic.c
index 591dbbbf..45a3fd56 100644
--- a/src/netif/ppp/magic.c
+++ b/src/netif/ppp/magic.c
@@ -136,7 +136,7 @@ void magic_randomize(void) {
 }
 
 /*
- * random_bytes - Fill a buffer with random bytes.
+ * magic_random_bytes - Fill a buffer with random bytes.
  *
  * Use the random pool to generate random data.  This degrades to pseudo
  *  random when used faster than randomness is supplied using magic_churnrand().
@@ -153,7 +153,7 @@ void magic_randomize(void) {
  *  magic_randcount each time?  Probably there is a weakness but I wish that
  *  it was documented.
  */
-void random_bytes(unsigned char *buf, u32_t buf_len) {
+void magic_random_bytes(unsigned char *buf, u32_t buf_len) {
   md5_context md5;
   u_char tmp[MD5_HASH_SIZE];
   u32_t n;
@@ -177,7 +177,7 @@ void random_bytes(unsigned char *buf, u32_t buf_len) {
 u32_t magic(void) {
   u32_t new_rand;
 
-  random_bytes((unsigned char *)&new_rand, sizeof(new_rand));
+  magic_random_bytes((unsigned char *)&new_rand, sizeof(new_rand));
 
   return new_rand;
 }
@@ -254,9 +254,9 @@ u32_t magic(void) {
 }
 
 /*
- * random_bytes - Fill a buffer with random bytes.
+ * magic_random_bytes - Fill a buffer with random bytes.
  */
-void random_bytes(unsigned char *buf, u32_t buf_len) {
+void magic_random_bytes(unsigned char *buf, u32_t buf_len) {
   u32_t new_rand, n;
 
   while (buf_len > 0) {
diff --git a/src/netif/ppp/pppol2tp.c b/src/netif/ppp/pppol2tp.c
index 7e8fbafe..333d1363 100644
--- a/src/netif/ppp/pppol2tp.c
+++ b/src/netif/ppp/pppol2tp.c
@@ -319,7 +319,7 @@ static err_t pppol2tp_connect(ppp_pcb *ppp, void *ctx) {
 #if PPPOL2TP_AUTH_SUPPORT
   /* Generate random vector */
   if (l2tp->secret != NULL) {
-    random_bytes(l2tp->secret_rv, sizeof(l2tp->secret_rv));
+    magic_random_bytes(l2tp->secret_rv, sizeof(l2tp->secret_rv));
   }
 #endif /* PPPOL2TP_AUTH_SUPPORT */