diff --git a/boards/arduino-mega2560/include/board.h b/boards/arduino-mega2560/include/board.h
index 715a8e8a8b70e0fb14a948f10f2384205a787c62..20f9d4a031d52875f0e18028451481d194a73509 100644
--- a/boards/arduino-mega2560/include/board.h
+++ b/boards/arduino-mega2560/include/board.h
@@ -28,11 +28,6 @@
 extern "C" {
 #endif
 
-/**
- * @brief Use the UART 0 for STDIO on this board
- */
-#define UART_STDIO_DEV      UART_DEV(0)
-
 /**
 * @brief As the CPU is too slow to handle 115200 baud, we set the default
 *        baudrate to 9600 for this board
diff --git a/boards/nucleo-f207/include/board.h b/boards/nucleo-f207/include/board.h
index 336f720571a726765f6b3cac91070e19f4547248..b9d0c68ea67477b7447c5b4ad6068ff4691d8f99 100644
--- a/boards/nucleo-f207/include/board.h
+++ b/boards/nucleo-f207/include/board.h
@@ -27,6 +27,7 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
+
 /**
  * @brief   LED pin definitions and handlers
  * @{
@@ -56,16 +57,6 @@ extern "C" {
 #define LED2_TOGGLE         (GPIOB->ODR  ^= LED2_MASK)
 /** @} */
 
-/**
- * @brief Use the 1st UART for STDIO on this board
- */
-#define UART_STDIO_DEV      UART_DEV(0)
-
-/**
- * @brief   User button
- */
-#define BTN_B1_PIN          GPIO_PIN(PORT_C, 13)
-
 /**
  * @brief   Initialize board specific hardware, including clock, LEDs and std-IO
  */
diff --git a/boards/z1/include/board.h b/boards/z1/include/board.h
index 730e70e73d00db66cf5afccd7bcba39b2f0fd1e3..3d27b65608360f5d5f4c4e6aa6c12741f7c9ff35 100644
--- a/boards/z1/include/board.h
+++ b/boards/z1/include/board.h
@@ -54,15 +54,6 @@ extern "C" {
 #define XTIMER_BACKOFF              (40)
 /** @} */
 
-/**
- * @brief   Standard input/output device configuration
- * @{
- */
-#define UART_STDIO_DEV              (UART_DEV(0))
-#define UART_STDIO_BAUDRATE         (115200U)
-#define UART_STDIO_RX_BUFSIZE       (64U)
-/** @} */
-
 /**
  * @brief   CPU core configuration
  *