diff --git a/nimble/host/include/host/ble_gap.h b/nimble/host/include/host/ble_gap.h
index ec795f0e2..fa7ee562d 100644
--- a/nimble/host/include/host/ble_gap.h
+++ b/nimble/host/include/host/ble_gap.h
@@ -1592,6 +1592,16 @@ int ble_gap_disc(uint8_t own_addr_type, int32_t duration_ms,
  *                              its last Scan Duration until it begins the
  *                              subsequent Scan Duration. Specify 0 to scan
  *                              continuously. Units are 1.28 second.
+ * @param filter_duplicates     Set to enable packet filtering in the
+ *                              controller
+ * @param filter_policy         Set the used filter policy. Valid values are:
+ *                                      - BLE_HCI_SCAN_FILT_NO_WL
+ *                                      - BLE_HCI_SCAN_FILT_USE_WL
+ *                                      - BLE_HCI_SCAN_FILT_NO_WL_INITA
+ *                                      - BLE_HCI_SCAN_FILT_USE_WL_INITA
+ *                                      - BLE_HCI_SCAN_FILT_MAX
+ *                              This parameter is ignored unless
+ *                              @p filter_duplicates is set.
  * @param limited               If limited discovery procedure should be used.
  * @param uncoded_params        Additional arguments specifying the particulars
  *                              of the discovery procedure for uncoded PHY.