diff --git a/platform/iris/init-net.c b/platform/iris/init-net.c
index 7e90616a0..f5e3f6556 100644
--- a/platform/iris/init-net.c
+++ b/platform/iris/init-net.c
@@ -124,7 +124,7 @@ init_net(void)
 {
 
   set_rime_addr();
-  rf230_init();
+  NETSTACK_RADIO.init();
   {
     uint8_t longaddr[8];
     uint16_t shortaddr;
diff --git a/platform/iris/platform-conf.h b/platform/iris/platform-conf.h
index de7590314..fc39ea646 100644
--- a/platform/iris/platform-conf.h
+++ b/platform/iris/platform-conf.h
@@ -48,12 +48,6 @@
 
 #define HARWARE_REVISION IRIS
 
-/*
- * MCU and clock rate.
- * IRIS runs on 8 MHz clock.
- */
-#define MCU_MHZ 8
-
 /* Clock ticks per second */
 #define CLOCK_CONF_SECOND 128