diff --git a/platform/msb430/contiki-conf.h b/platform/msb430/contiki-conf.h
index d75ded1fe..e6b525d40 100644
--- a/platform/msb430/contiki-conf.h
+++ b/platform/msb430/contiki-conf.h
@@ -12,7 +12,7 @@
 #define NETSTACK_CONF_NETWORK		rime_driver
 #define NETSTACK_CONF_FRAMER		framer_nullmac
 
-#define MAC_CONF_CHANNEL_CHECK_RATE	8
+#define NETSTACK_CONF_RDC_CHANNEL_CHECK_RATE	8
 
 #define ENERGEST_CONF_ON		1
 
diff --git a/platform/z1/contiki-conf.h b/platform/z1/contiki-conf.h
index a0fd94e8b..5258090ad 100644
--- a/platform/z1/contiki-conf.h
+++ b/platform/z1/contiki-conf.h
@@ -73,7 +73,6 @@
 #define NETSTACK_CONF_FRAMER  framer_802154
 
 #define CC2420_CONF_AUTOACK              1
-#define MAC_CONF_CHANNEL_CHECK_RATE      8
 
 #define COLLECT_CONF_ANNOUNCEMENTS       1
 #define RIME_CONF_NO_POLITE_ANNOUCEMENTS 0
diff --git a/platform/z1sp/contiki-conf.h b/platform/z1sp/contiki-conf.h
index c09b44635..20e8db9f1 100644
--- a/platform/z1sp/contiki-conf.h
+++ b/platform/z1sp/contiki-conf.h
@@ -67,7 +67,6 @@
 #define NETSTACK_CONF_FRAMER  framer_802154
 
 #define CC2420_CONF_AUTOACK              0
-#define MAC_CONF_CHANNEL_CHECK_RATE      8
 
 #define COLLECT_CONF_ANNOUNCEMENTS       1
 #define RIME_CONF_NO_POLITE_ANNOUCEMENTS 0