diff --git a/drivers/include/dose.h b/drivers/include/dose.h
index 600074ab476d..fdc2f120f7c2 100644
--- a/drivers/include/dose.h
+++ b/drivers/include/dose.h
@@ -175,7 +175,8 @@ typedef struct {
  * @brief   Setup a DOSE based device state
  * @param[out]  dev         Handle of the device to initialize
  * @param[in]   params      Parameters for device initialization
- * @param[in]   index       The index in the config struct
+ * @param[in]   index       index of @p params in a global parameter struct array.
+ *                          If initialized manually, pass a unique identifier instead.
  */
 void dose_setup(dose_t *dev, const dose_params_t *params, uint8_t index);