diff --git a/arch/mips/src/pic32mx/pic32mx_ethernet.c b/arch/mips/src/pic32mx/pic32mx_ethernet.c
index f6f81f024b8..2443e71e30f 100644
--- a/arch/mips/src/pic32mx/pic32mx_ethernet.c
+++ b/arch/mips/src/pic32mx/pic32mx_ethernet.c
@@ -42,6 +42,7 @@
 #include <nuttx/config.h>
 #if defined(CONFIG_NET) && defined(CONFIG_PIC32MX_ETHERNET)
 
+#include <inttypes.h>
 #include <stdint.h>
 #include <stdbool.h>
 #include <time.h>
@@ -1418,7 +1419,7 @@ static void pic32mx_rxdone(struct pic32mx_driver_s *priv)
 
       if ((rxdesc->rsv2 & RXDESC_RSV2_OK) == 0)
         {
-          nerr("ERROR. rsv1: %08x rsv2: %08x\n",
+          nerr("ERROR. rsv1: %08" PRIx32 " rsv2: %08" PRIx32 "\n",
                rxdesc->rsv1, rxdesc->rsv2);
           NETDEV_RXERRORS(&priv->pd_dev);
           pic32mx_rxreturn(rxdesc);
@@ -1432,7 +1433,7 @@ static void pic32mx_rxdone(struct pic32mx_driver_s *priv)
 
       else if (priv->pd_dev.d_len > CONFIG_NET_ETH_PKTSIZE)
         {
-          nerr("ERROR: Too big. packet length: %d rxdesc: %08x\n",
+          nerr("ERROR: Too big. packet length: %d rxdesc: %08" PRIx32 "\n",
                priv->pd_dev.d_len, rxdesc->status);
           NETDEV_RXERRORS(&priv->pd_dev);
           pic32mx_rxreturn(rxdesc);
@@ -1445,7 +1446,7 @@ static void pic32mx_rxdone(struct pic32mx_driver_s *priv)
       else if ((rxdesc->status & (RXDESC_STATUS_EOP | RXDESC_STATUS_SOP)) !=
                (RXDESC_STATUS_EOP | RXDESC_STATUS_SOP))
         {
-          nerr("ERROR: Fragment. packet length: %d rxdesc: %08x\n",
+          nerr("ERROR: Fragment. packet length: %d rxdesc: %08" PRIx32 "\n",
                priv->pd_dev.d_len, rxdesc->status);
           NETDEV_RXFRAGMENTS(&priv->pd_dev);
           pic32mx_rxreturn(rxdesc);
@@ -1753,7 +1754,7 @@ static void pic32mx_interrupt_work(void *arg)
 
       if ((status & ETH_INT_RXOVFLW) != 0)
         {
-          nerr("ERROR: RX Overrun. status: %08x\n", status);
+          nerr("ERROR: RX Overrun. status: %08" PRIx32 "\n", status);
           NETDEV_RXERRORS(&priv->pd_dev);
         }
 
@@ -1764,7 +1765,8 @@ static void pic32mx_interrupt_work(void *arg)
 
       if ((status & ETH_INT_RXBUFNA) != 0)
         {
-          nerr("ERROR: RX buffer descriptor overrun. status: %08x\n",
+          nerr("ERROR: RX buffer descriptor overrun. "
+               "status: %08" PRIx32 "\n",
                status);
           NETDEV_RXERRORS(&priv->pd_dev);
         }
@@ -1776,7 +1778,7 @@ static void pic32mx_interrupt_work(void *arg)
 
       if ((status & ETH_INT_RXBUSE) != 0)
         {
-          nerr("ERROR: RX BVCI bus error. status: %08x\n", status);
+          nerr("ERROR: RX BVCI bus error. status: %08" PRIx32 "\n", status);
           NETDEV_RXERRORS(&priv->pd_dev);
         }
 
@@ -1821,7 +1823,7 @@ static void pic32mx_interrupt_work(void *arg)
 
       if ((status & ETH_INT_TXABORT) != 0)
         {
-          nerr("ERROR: TX abort. status: %08x\n", status);
+          nerr("ERROR: TX abort. status: %08" PRIx32 "\n", status);
           NETDEV_TXERRORS(&priv->pd_dev);
         }
 
@@ -1832,7 +1834,7 @@ static void pic32mx_interrupt_work(void *arg)
 
       if ((status & ETH_INT_TXBUSE) != 0)
         {
-          nerr("ERROR: TX BVCI bus error. status: %08x\n", status);
+          nerr("ERROR: TX BVCI bus error. status: %08" PRIx32 "\n", status);
           NETDEV_TXERRORS(&priv->pd_dev);
         }
 
@@ -2123,8 +2125,10 @@ static int pic32mx_ifup(struct net_driver_s *dev)
   int ret;
 
   ninfo("Bringing up: %d.%d.%d.%d\n",
-        dev->d_ipaddr & 0xff, (dev->d_ipaddr >> 8) & 0xff,
-        (dev->d_ipaddr >> 16) & 0xff, dev->d_ipaddr >> 24);
+        (int)(dev->d_ipaddr & 0xff),
+        (int)((dev->d_ipaddr >> 8) & 0xff),
+        (int)((dev->d_ipaddr >> 16) & 0xff),
+        (int)(dev->d_ipaddr >> 24));
 
   /* Reset the Ethernet controller (again) */