diff --git a/boards/airfy-beacon/include/periph_conf.h b/boards/airfy-beacon/include/periph_conf.h
index ce507eab80..cce1947844 100644
--- a/boards/airfy-beacon/include/periph_conf.h
+++ b/boards/airfy-beacon/include/periph_conf.h
@@ -95,12 +95,13 @@ static const timer_conf_t timer_config[] = {
 /** @} */
 
 /**
- * @name ADC configuration
+ * @brief   ADC configuration
+ *
+ * The configuration consists simply of a list of channels that should be used
  * @{
  */
-static const uint8_t adc_config[] = {3, 4, 5, 6};
-
-#define ADC_NUMOF           (sizeof(adc_config) / sizeof(adc_config[0]))
+#define ADC_CONFIG          {3, 4, 5, 6}
+#define ADC_NUMOF           (4)
 /** @} */
 
 /**
diff --git a/boards/pca10000/include/periph_conf.h b/boards/pca10000/include/periph_conf.h
index b00406327b..08cfd5b789 100644
--- a/boards/pca10000/include/periph_conf.h
+++ b/boards/pca10000/include/periph_conf.h
@@ -82,6 +82,15 @@ static const timer_conf_t timer_config[] = {
 #define UART_PIN_CTS      10
 /** @} */
 
+/**
+ * @brief   ADC configuration
+ *
+ * The configuration consists simply of a list of channels that should be used
+ * @{
+ */
+#define ADC_NUMOF          (0)
+/** @} */
+
 /**
  * @name Radio device configuration
  *