diff --git a/class/class.apop.apop_ui.php b/class/class.apop.apop_ui.php
index 69748e5..d852d68 100644
--- a/class/class.apop.apop_ui.php
+++ b/class/class.apop.apop_ui.php
@@ -362,7 +362,7 @@ value="' . esc_html( $sort_num ) . '">
 					name="' . esc_attr( $name_custom_field_type ) . '"
 					value="2"' . esc_attr( self::set_search_normal_checked( $custom_field_type, '2' ) ) . '>追加</label>
 					</div>';
-			echo '<input type="text" id="select-custom-field-input" class="custom_field_key_select" name="' . esc_attr( $name_meta_key ) . '" . value="' . esc_attr( $custom_field_val_1 ) . '" required>
+			echo '<input type="text" class="select-custom-field-input custom_field_key_select" name="' . esc_attr( $name_meta_key ) . '" . value="' . esc_attr( $custom_field_val_1 ) . '" required>
 					<input type="text" class="custom_field_key" name="' . esc_attr( $name_meta_key ) . '" value="' . esc_attr( $custom_field_val_2 ) . '" required>
 					</div>
 					<div class="sort-custom-field-inner">
diff --git a/js/custom_field.js b/js/custom_field.js
index b4bde31..c2e2cad 100644
--- a/js/custom_field.js
+++ b/js/custom_field.js
@@ -1,5 +1,5 @@
 jQuery(function ($) {
-    $('#select-custom-field-input').autocomplete({
+    $('.select-custom-field-input').autocomplete({
         source: function (req, resp) {
             $.ajax({
                 type: 'GET',