diff --git a/boards/nucleo-f207zg/include/periph_conf.h b/boards/nucleo-f207zg/include/periph_conf.h
index fe3ed343a9..3ce29f9a07 100644
--- a/boards/nucleo-f207zg/include/periph_conf.h
+++ b/boards/nucleo-f207zg/include/periph_conf.h
@@ -248,7 +248,6 @@ static const adc_conf_t adc_config[] = {
  */
 static const eth_conf_t eth_config = {
     .mode = RMII,
-    .addr = { 0 },
     .speed = MII_BMCR_SPEED_100 | MII_BMCR_FULL_DPLX,
     .dma = 6,
     .dma_chan = 8,
diff --git a/boards/nucleo-f746zg/include/periph_conf.h b/boards/nucleo-f746zg/include/periph_conf.h
index ce1cc54ee4..b0dc181311 100644
--- a/boards/nucleo-f746zg/include/periph_conf.h
+++ b/boards/nucleo-f746zg/include/periph_conf.h
@@ -219,7 +219,6 @@ static const spi_conf_t spi_config[] = {
  */
 static const eth_conf_t eth_config = {
     .mode = RMII,
-    .addr = { 0 },
     .speed = MII_BMCR_SPEED_100 | MII_BMCR_FULL_DPLX,
     .dma = 7,
     .dma_chan = 8,
diff --git a/boards/nucleo-f767zi/include/periph_conf.h b/boards/nucleo-f767zi/include/periph_conf.h
index 9f715925d0..8358b2cdc6 100644
--- a/boards/nucleo-f767zi/include/periph_conf.h
+++ b/boards/nucleo-f767zi/include/periph_conf.h
@@ -167,7 +167,6 @@ static const spi_conf_t spi_config[] = {
  */
 static const eth_conf_t eth_config = {
     .mode = RMII,
-    .addr = { 0 },
     .speed = MII_BMCR_SPEED_100 | MII_BMCR_FULL_DPLX,
     .dma = 3,
     .dma_chan = 8,
diff --git a/cpu/stm32/include/periph_cpu.h b/cpu/stm32/include/periph_cpu.h
index 5ca6def479..94ae88d428 100644
--- a/cpu/stm32/include/periph_cpu.h
+++ b/cpu/stm32/include/periph_cpu.h
@@ -1049,7 +1049,6 @@ typedef enum {
  */
 typedef struct {
     eth_mode_t mode;            /**< Select configuration mode */
-    uint8_t addr[6];            /**< Ethernet MAC address */
     uint16_t speed;             /**< Speed selection */
     uint8_t dma;                /**< Locical CMA Descriptor used for TX */
     uint8_t dma_chan;           /**< DMA channel used for TX */