diff --git a/sys/auto_init/netif/auto_init_at86rf2xx.c b/sys/auto_init/netif/auto_init_at86rf2xx.c
index e0b757767a84f5c24a3e49a4453f772c301f8903..7570b761ea9cd60fca6f03172d63b7baa1c1a211 100644
--- a/sys/auto_init/netif/auto_init_at86rf2xx.c
+++ b/sys/auto_init/netif/auto_init_at86rf2xx.c
@@ -43,7 +43,7 @@
 
 static at86rf2xx_t at86rf2xx_devs[AT86RF2XX_NUM];
 static gnrc_netdev2_t gnrc_adpt[AT86RF2XX_NUM];
-static char _at86rf2xx_stacks[AT86RF2XX_MAC_STACKSIZE][AT86RF2XX_NUM];
+static char _at86rf2xx_stacks[AT86RF2XX_NUM][AT86RF2XX_MAC_STACKSIZE];
 
 void auto_init_at86rf2xx(void)
 {
diff --git a/sys/auto_init/netif/auto_init_cc110x.c b/sys/auto_init/netif/auto_init_cc110x.c
index cde266bebe26ccc2035f76d1c3ae8d1abc7301b4..8244397f0be6d75a6f8d0527aee863b60576155b 100644
--- a/sys/auto_init/netif/auto_init_cc110x.c
+++ b/sys/auto_init/netif/auto_init_cc110x.c
@@ -42,7 +42,7 @@
 #define CC110X_NUM (sizeof(cc110x_params)/sizeof(cc110x_params[0]))
 
 static netdev2_cc110x_t cc110x_devs[CC110X_NUM];
-static char _stacks[CC110X_MAC_STACKSIZE][CC110X_NUM];
+static char _stacks[CC110X_NUM][CC110X_MAC_STACKSIZE];
 
 static gnrc_netdev2_t _gnrc_netdev2_devs[CC110X_NUM];
 
diff --git a/sys/auto_init/netif/auto_init_enc28j60.c b/sys/auto_init/netif/auto_init_enc28j60.c
index 355fd3513ceea65d6afa198eedca0b7cd31b0b30..9d70374fca1bdf9e9acc4d4f9d7c8c6cc63b310e 100644
--- a/sys/auto_init/netif/auto_init_enc28j60.c
+++ b/sys/auto_init/netif/auto_init_enc28j60.c
@@ -55,7 +55,7 @@ static gnrc_netdev2_t gnrc_adpt[ENC28J60_NUM];
 /**
  * @brief   Stacks for the MAC layer threads
  */
-static char stack[ENC28J60_MAC_STACKSIZE][ENC28J60_NUM];
+static char stack[ENC28J60_NUM][ENC28J60_MAC_STACKSIZE];
 
 
 void auto_init_enc28j60(void)
diff --git a/sys/auto_init/netif/auto_init_kw2xrf.c b/sys/auto_init/netif/auto_init_kw2xrf.c
index cc80764885317e40065239a4431e28910feda27f..47fe4ce4537185f29eefeedfbbf49ef5a0adfc15 100644
--- a/sys/auto_init/netif/auto_init_kw2xrf.c
+++ b/sys/auto_init/netif/auto_init_kw2xrf.c
@@ -44,7 +44,7 @@
 #define KW2XRF_NUM (sizeof(kw2xrf_params)/sizeof(kw2xrf_params[0]))
 
 static kw2xrf_t kw2xrf_devs[KW2XRF_NUM];
-static char _nomac_stacks[KW2XRF_MAC_STACKSIZE][KW2XRF_NUM];
+static char _nomac_stacks[KW2XRF_NUM][KW2XRF_MAC_STACKSIZE];
 
 void auto_init_kw2xrf(void)
 {
diff --git a/sys/auto_init/netif/auto_init_slip.c b/sys/auto_init/netif/auto_init_slip.c
index 2da643e597f54d91d6987bf0b4cba8db48182d5c..6a721c7442b5ad9e9b3e7ed25a01100d02d41ccf 100644
--- a/sys/auto_init/netif/auto_init_slip.c
+++ b/sys/auto_init/netif/auto_init_slip.c
@@ -46,7 +46,7 @@ static gnrc_slip_dev_t slip_devs[SLIP_NUM];
 /**
  * @brief   Stacks for the MAC layer threads
  */
-static char _slip_stacks[SLIP_STACKSIZE][SLIP_NUM];
+static char _slip_stacks[SLIP_NUM][SLIP_STACKSIZE];
 
 void auto_init_slip(void)
 {
diff --git a/sys/auto_init/netif/auto_init_w5100.c b/sys/auto_init/netif/auto_init_w5100.c
index bff96f78b50970123256f815190a3e2c6c0b9872..2810908e1032ee7546a74e9b5519954964a9b330 100644
--- a/sys/auto_init/netif/auto_init_w5100.c
+++ b/sys/auto_init/netif/auto_init_w5100.c
@@ -51,7 +51,7 @@ static gnrc_netdev2_t gnrc_adpt[W5100_NUM];
 /**
  * @brief   Stacks for the MAC layer threads
  */
-static char stack[MAC_STACKSIZE][W5100_NUM];
+static char stack[W5100_NUM][MAC_STACKSIZE];
 
 
 void auto_init_w5100(void)
diff --git a/sys/auto_init/netif/auto_init_xbee.c b/sys/auto_init/netif/auto_init_xbee.c
index 2d7a172913c362f961e60b401f268c7999c5f40f..587290d47f8564a349ed24eb7c0c3afcc1feecc0 100644
--- a/sys/auto_init/netif/auto_init_xbee.c
+++ b/sys/auto_init/netif/auto_init_xbee.c
@@ -46,7 +46,7 @@
  */
 static xbee_t xbee_devs[XBEE_NUM];
 static gnrc_netdev2_t gnrc_adpt[XBEE_NUM];
-static char stacks[XBEE_MAC_STACKSIZE][XBEE_NUM];
+static char stacks[XBEE_NUM][XBEE_MAC_STACKSIZE];
 
 void auto_init_xbee(void)
 {