diff --git a/board/keymile/common/ivm.c b/board/keymile/common/ivm.c
index 607daa6d655d592ca67e04a27a025cf1298952e7..d568fd9def5eb8a729dac60fbd7ca39cb3e8f4f7 100644
--- a/board/keymile/common/ivm.c
+++ b/board/keymile/common/ivm.c
@@ -201,6 +201,22 @@ static int ivm_check_crc(unsigned char *buf, int block)
 	return 0;
 }
 
+static int calculate_mac_offset(unsigned char *valbuf, unsigned char *buf,
+				int offset)
+{
+	unsigned long val = (buf[4] << 16) + (buf[5] << 8) + buf[6];
+
+	if (offset == 0)
+		return 0;
+
+	val += offset;
+	buf[4] = (val >> 16) & 0xff;
+	buf[5] = (val >> 8) & 0xff;
+	buf[6] = val & 0xff;
+	sprintf((char *)valbuf, "%pM", buf + 1);
+	return 0;
+}
+
 static int ivm_analyze_block2(unsigned char *buf, int len)
 {
 	unsigned char	valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
@@ -210,17 +226,7 @@ static int ivm_analyze_block2(unsigned char *buf, int len)
 	sprintf((char *)valbuf, "%pM", buf + 1);
 	ivm_set_value("IVM_MacAddress", (char *)valbuf);
 	/* if an offset is defined, add it */
-#if defined(CONFIG_PIGGY_MAC_ADRESS_OFFSET)
-	if (CONFIG_PIGGY_MAC_ADRESS_OFFSET > 0) {
-		unsigned long val = (buf[4] << 16) + (buf[5] << 8) + buf[6];
-
-		val += CONFIG_PIGGY_MAC_ADRESS_OFFSET;
-		buf[4] = (val >> 16) & 0xff;
-		buf[5] = (val >> 8) & 0xff;
-		buf[6] = val & 0xff;
-		sprintf((char *)valbuf, "%pM", buf + 1);
-	}
-#endif
+	calculate_mac_offset(buf, valbuf, CONFIG_PIGGY_MAC_ADRESS_OFFSET);
 #ifdef MACH_TYPE_KM_KIRKWOOD
 	setenv((char *)"ethaddr", (char *)valbuf);
 #else