diff --git a/boards/pinetime/include/periph_conf.h b/boards/pinetime/include/periph_conf.h
index ae4967ba2d..edba426018 100644
--- a/boards/pinetime/include/periph_conf.h
+++ b/boards/pinetime/include/periph_conf.h
@@ -63,6 +63,11 @@ static const i2c_conf_t i2c_config[] = {
 #define I2C_NUMOF           ARRAY_SIZE(i2c_config)
 /** @} */
 
+/**
+ * @brief Enable the internal DC/DC converter
+ */
+#define NRF5X_ENABLE_DCDC
+
 #ifdef __cplusplus
 }
 #endif