diff --git a/cpu/native/include/cpu-conf.h b/cpu/native/include/cpu-conf.h
index e6c5fc9ef3..60240c08bd 100644
--- a/cpu/native/include/cpu-conf.h
+++ b/cpu/native/include/cpu-conf.h
@@ -17,27 +17,38 @@
 #define CPUCONF_H_
 #include <signal.h>
 
-/* TODO: choose more sensibly? */
-#define KERNEL_CONF_STACKSIZE_PRINTF    (81920)
-
+/* TODO: tighten stack sizes */
 #ifdef __MACH__ /* OSX */
 #define KERNEL_CONF_STACKSIZE_DEFAULT   (163840)
 #define KERNEL_CONF_STACKSIZE_IDLE      (163840)
-#define NATIVE_ISR_STACKSIZE            (163840)
-#define TRANSCEIVER_STACK_SIZE          (163840)
+#define KERNEL_CONF_STACKSIZE_PRINTF    (163840)
+/* for core/include/thread.h */
 #define MINIMUM_STACK_SIZE              (163840)
+/* undefine the TRANSCEIVER_STACK_SIZE (2048 or 512) defined in transceiver.h */
+#ifdef TRANSCEIVER_STACK_SIZE
+#undef TRANSCEIVER_STACK_SIZE
+#endif
+#define TRANSCEIVER_STACK_SIZE          (163840)
+/* native internal */
+#define MINIMUM_STACK_SIZE              (163840)
+#define NATIVE_ISR_STACKSIZE            (163840)
+
 #else /* Linux etc. */
-#define KERNEL_CONF_STACKSIZE_DEFAULT	(KERNEL_CONF_STACKSIZE_PRINTF + 8192)
-#define KERNEL_CONF_STACKSIZE_IDLE      (16384)
-#define NATIVE_ISR_STACKSIZE            (16384)
+#define KERNEL_CONF_STACKSIZE_DEFAULT	(8192)
+#define KERNEL_CONF_STACKSIZE_IDLE      (8192)
+#define KERNEL_CONF_STACKSIZE_PRINTF    (8192)
+/* for core/include/thread.h */
+#define MINIMUM_STACK_SIZE              (8192)
 /* undefine the TRANSCEIVER_STACK_SIZE (2048 or 512) defined in transceiver.h */
 #ifdef TRANSCEIVER_STACK_SIZE
 #undef TRANSCEIVER_STACK_SIZE
 #endif
 #define TRANSCEIVER_STACK_SIZE          (16384)
-#define MINIMUM_STACK_SIZE              (16384)
+/* native internal */
+#define NATIVE_ISR_STACKSIZE            (8192)
 #endif /* OS */
 
+/* for nativenet */
 #define NATIVE_ETH_PROTO 0x1234
 
 #endif /* CPUCONF_H_ */