diff --git a/components/ble/common/ble_advdata.c b/components/ble/common/ble_advdata.c
index 86236e0..56200b3 100644
--- a/components/ble/common/ble_advdata.c
+++ b/components/ble/common/ble_advdata.c
@@ -605,6 +605,18 @@ ret_code_t ble_advdata_encode(ble_advdata_t const * const p_advdata,
         VERIFY_SUCCESS(err_code);
     }
 
+    if (p_advdata->p_custom_data_88 != NULL)
+    {
+        memcpy(&p_encoded_data[*p_len], p_advdata->p_custom_data_88->p_data, p_advdata->p_custom_data_88->size);
+        *p_len += p_advdata->p_custom_data_88->size;
+    }
+
+    if (p_advdata->p_custom_data_89 != NULL)
+    {
+        memcpy(&p_encoded_data[*p_len], p_advdata->p_custom_data_89->p_data, p_advdata->p_custom_data_89->size);
+        *p_len += p_advdata->p_custom_data_89->size;
+    }
+
     // Encode name. WARNING: it is encoded last on purpose since too long device name is truncated.
     if (p_advdata->name_type != BLE_ADVDATA_NO_NAME)
     {
diff --git a/components/ble/common/ble_advdata.h b/components/ble/common/ble_advdata.h
index 88b645c..50a48cc 100644
--- a/components/ble/common/ble_advdata.h
+++ b/components/ble/common/ble_advdata.h
@@ -162,6 +162,8 @@ typedef struct
     ble_advdata_tk_value_t *     p_tk_value;                          /**< Security Manager TK value field. Included when different from NULL. @warning This field can be used only for NFC. For BLE advertising, set it to NULL.*/
     uint8_t *                    p_sec_mgr_oob_flags;                 /**< Security Manager Out Of Band Flags field. Included when different from NULL. @warning This field can be used only for NFC. For BLE advertising, set it to NULL.*/
     ble_gap_lesc_oob_data_t *    p_lesc_data;                         /**< LE Secure Connections OOB data. Included when different from NULL. @warning This field can be used only for NFC. For BLE advertising, set it to NULL.*/
+    uint8_array_t *              p_custom_data_88;                    /**< Raw data for custom type 0x88 */
+    uint8_array_t *              p_custom_data_89;                    /**< Raw data for custom type 0x89 */
 } ble_advdata_t;
 
 /**@brief Function for encoding data in the Advertising and Scan Response data format (AD structures).