diff --git a/enc28j60.cpp b/enc28j60.cpp
index 28666f1..0e6c221 100644
--- a/enc28j60.cpp
+++ b/enc28j60.cpp
@@ -72,7 +72,6 @@ bool ENC28J60::promiscuous_enabled = false;
 #define EPKTCNT          (0x19|0x20)
 // Bank 2 registers
 #define MACON1           (0x00|0x40|0x80)
-#define MACON2           (0x01|0x40|0x80)
 #define MACON3           (0x02|0x40|0x80)
 #define MACON4           (0x03|0x40|0x80)
 #define MABBIPG          (0x04|0x40|0x80)
@@ -154,13 +153,6 @@ bool ENC28J60::promiscuous_enabled = false;
 #define MACON1_RXPAUS    0x04
 #define MACON1_PASSALL   0x02
 #define MACON1_MARXEN    0x01
-// ENC28J60 MACON2 Register Bit Definitions
-#define MACON2_MARST     0x80
-#define MACON2_RNDRST    0x40
-#define MACON2_MARXRST   0x08
-#define MACON2_RFUNRST   0x04
-#define MACON2_MATXRST   0x02
-#define MACON2_TFUNRST   0x01
 // ENC28J60 MACON3 Register Bit Definitions
 #define MACON3_PADCFG2   0x80
 #define MACON3_PADCFG1   0x40
@@ -394,7 +386,6 @@ byte ENC28J60::initialize (uint16_t size, const byte* macaddr, byte csPin) {
     writeReg(EPMM0, 0x303f);
     writeReg(EPMCS, 0xf7f9);
     writeRegByte(MACON1, MACON1_MARXEN|MACON1_TXPAUS|MACON1_RXPAUS);
-    writeRegByte(MACON2, 0x00);
     writeOp(ENC28J60_BIT_FIELD_SET, MACON3,
             MACON3_PADCFG0|MACON3_TXCRCEN|MACON3_FRMLNEN);
     writeReg(MAIPG, 0x0C12);