diff --git a/platform/srf06-cc26xx/contiki-conf.h b/platform/srf06-cc26xx/contiki-conf.h
index 85c99ee19..90fabfa86 100644
--- a/platform/srf06-cc26xx/contiki-conf.h
+++ b/platform/srf06-cc26xx/contiki-conf.h
@@ -120,8 +120,8 @@
 #define CONTIKIMAC_CONF_CCA_SLEEP_TIME            (RTIMER_ARCH_SECOND / 210)
 #define CONTIKIMAC_CONF_LISTEN_TIME_AFTER_PACKET_DETECTED  (RTIMER_ARCH_SECOND / 20)
 #define CONTIKIMAC_CONF_SEND_SW_ACK               1
-#define CONTIKIMAC_CONF_AFTER_ACK_DETECTED_WAIT_TIME (RTIMER_SECOND / 1000)
-#define CONTIKIMAC_CONF_INTER_PACKET_INTERVAL     (RTIMER_SECOND / 240)
+#define CONTIKIMAC_CONF_AFTER_ACK_DETECTED_WAIT_TIME (RTIMER_SECOND / 920)
+#define CONTIKIMAC_CONF_INTER_PACKET_INTERVAL     (RTIMER_SECOND / 220)
 #else
 #define NETSTACK_CONF_RADIO        ieee_mode_driver