diff --git a/source/portable/NetworkInterface/pic32mzef/NetworkInterface_eth.c b/source/portable/NetworkInterface/pic32mzef/NetworkInterface_eth.c
index df35ed880..e0333a94c 100644
--- a/source/portable/NetworkInterface/pic32mzef/NetworkInterface_eth.c
+++ b/source/portable/NetworkInterface/pic32mzef/NetworkInterface_eth.c
@@ -266,7 +266,7 @@
         if( xMacInitStatus == eMACInit )
         {
             /* This is the first time this function is called. */
-            if( StartInitMac() != false )
+            if( StartInitMac( pxInterface ) != false )
             {
                 /* Indicate that the MAC initialisation succeeded. */
                 xMacInitStatus = eMACPass;