diff --git a/boards/nucleo-f303/include/periph_conf.h b/boards/nucleo-f303/include/periph_conf.h
index 9a394d3435feda50109d0b28617082de9e1c8db0..6b5cdb8d283eb264e05f0c75ebd35cc8038fd283 100755
--- a/boards/nucleo-f303/include/periph_conf.h
+++ b/boards/nucleo-f303/include/periph_conf.h
@@ -234,7 +234,6 @@ extern "C" {
  * @brief GPIO configuration
  * @{
  */
-#define GPIO_NUMOF          3
 #define GPIO_0_EN           1
 #define GPIO_1_EN           1
 #define GPIO_2_EN           1