diff --git a/netutils/pppd/ahdlc.c b/netutils/pppd/ahdlc.c
index 0245a6a1b..06cdb814c 100644
--- a/netutils/pppd/ahdlc.c
+++ b/netutils/pppd/ahdlc.c
@@ -365,12 +365,12 @@ u8_t ahdlc_tx(struct ppp_context_s *ctx, u16_t protocol, u8_t *header,
 
 #if PACKET_TX_DEBUG
   DEBUG1(("\n"));
-  for(i = 0; i < headerlen; ++i)
+  for (i = 0; i < headerlen; ++i)
     {
       DEBUG1(("0x%02x ", header[i]));
     }
 
-  for(i = 0; i < datalen; ++i)
+  for (i = 0; i < datalen; ++i)
     {
       DEBUG1(("0x%02x ", buffer[i]));
     }
@@ -405,7 +405,7 @@ u8_t ahdlc_tx(struct ppp_context_s *ctx, u16_t protocol, u8_t *header,
 
   /* Write header if it exists */
 
-  for(i = 0; i < headerlen; ++i)
+  for (i = 0; i < headerlen; ++i)
     {
       /* Get next byte from buffer */
 
@@ -418,7 +418,7 @@ u8_t ahdlc_tx(struct ppp_context_s *ctx, u16_t protocol, u8_t *header,
 
   /* Write frame bytes */
 
-  for(i = 0; i < datalen; ++i)
+  for (i = 0; i < datalen; ++i)
     {
       /* Get next byte from buffer */
 
diff --git a/netutils/pppd/ppp.c b/netutils/pppd/ppp.c
index 2851039a5..6321a6730 100644
--- a/netutils/pppd/ppp.c
+++ b/netutils/pppd/ppp.c
@@ -99,7 +99,7 @@ static void ppp_reject_protocol(struct ppp_context_s *ctx, u16_t protocol,
 
   dptr = buffer + count + 6;
   sptr = buffer + count;
-  for(i = 0; i < count; ++i)
+  for (i = 0; i < count; ++i)
     {
       *dptr-- = *sptr--;
     }
@@ -127,7 +127,7 @@ void dump_ppp_packet(u8_t *buffer, u16_t len)
   int i;
 
   DEBUG1(("\n"));
-  for(i = 0;i < len; ++i)
+  for (i = 0;i < len; ++i)
     {
       if ((i & 0x1f) == 0x10)
         {
@@ -371,41 +371,42 @@ void ppp_upcall(struct ppp_context_s *ctx, u16_t protocol, u8_t *buffer, u16_t l
     {
       /* Demux on protocol field */
 
-      switch(protocol) {
-      case LCP:  /* We must support some level of LCP */
-        DEBUG1(("LCP Packet - "));
-        lcp_rx(ctx, buffer, len);
-        DEBUG1(("\n"));
-        break;
+      switch (protocol)
+        {
+        case LCP:  /* We must support some level of LCP */
+          DEBUG1(("LCP Packet - "));
+          lcp_rx(ctx, buffer, len);
+          DEBUG1(("\n"));
+          break;
 
 #ifdef CONFIG_NETUTILS_PPPD_PAP
-      case PAP:  /* PAP should be compile in optional */
-        DEBUG1(("PAP Packet - "));
-        pap_rx(ctx, buffer, len);
-        DEBUG1(("\n"));
-        break;
+        case PAP:  /* PAP should be compile in optional */
+          DEBUG1(("PAP Packet - "));
+          pap_rx(ctx, buffer, len);
+          DEBUG1(("\n"));
+          break;
 #endif /* CONFIG_NETUTILS_PPPD_PAP */
 
-      case IPCP: /* IPCP should be compile in optional. */
-        DEBUG1(("IPCP Packet - "));
-        ipcp_rx(ctx, buffer, len);
-        DEBUG1(("\n"));
-        break;
+        case IPCP: /* IPCP should be compile in optional. */
+          DEBUG1(("IPCP Packet - "));
+          ipcp_rx(ctx, buffer, len);
+          DEBUG1(("\n"));
+          break;
 
-      case IPV4: /* We must support IPV4 */
-        DEBUG1(("IPV4 Packet---\n"));
-        memcpy(ctx->ip_buf, buffer, len);
-        ctx->ip_len = len;
-        ctx->ip_no_data_time = 0;
-        DEBUG1(("\n"));
-        break;
+        case IPV4: /* We must support IPV4 */
+          DEBUG1(("IPV4 Packet---\n"));
+          memcpy(ctx->ip_buf, buffer, len);
+          ctx->ip_len = len;
+          ctx->ip_no_data_time = 0;
+          DEBUG1(("\n"));
+          break;
 
-      default:
-        DEBUG1(("Unknown PPP Packet Type 0x%04x - ",protocol));
-        ppp_reject_protocol(ctx, protocol, buffer, len);
-        DEBUG1(("\n"));
-        break;
-      }
+        default:
+          DEBUG1(("Unknown PPP Packet Type 0x%04x - ",protocol));
+          ppp_reject_protocol(ctx, protocol, buffer, len);
+          DEBUG1(("\n"));
+          break;
+        }
     }
 }
 
@@ -460,7 +461,7 @@ u16_t scan_packet(struct ppp_context_s *ctx, u16_t protocol, const u8_t *list,
           bad = 1;
           *tptr++ = i;
           j = *tptr++ = *bptr++;
-          for(i = 0; i < j - 2; ++i)
+          for (i = 0; i < j - 2; ++i)
             {
               *tptr++ = *bptr++;
             }
diff --git a/netutils/pppd/pppd.c b/netutils/pppd/pppd.c
index 3a51a4f45..7f2c68ffe 100644
--- a/netutils/pppd/pppd.c
+++ b/netutils/pppd/pppd.c
@@ -113,7 +113,9 @@ static int tun_alloc(char *dev)
   int fd, err;
 
   if ((fd = open("/dev/tun", O_RDWR)) < 0)
+    {
       return fd;
+    }
 
   printf("tun fd:%i\n", fd);
 
@@ -151,7 +153,9 @@ static int open_tty(char *dev)
   int err;
 
   if ((fd = open(dev, O_RDWR)) < 0)
+    {
       return fd;
+    }
 
   if ((err = make_nonblock(fd)) < 0)
     {