diff --git a/src/pages/en/utol/lecturers/settings/course_participants/index.md b/src/pages/en/utol/lecturers/settings/course_participants/index.md
index 8c002e2a09..b66a1775ed 100644
--- a/src/pages/en/utol/lecturers/settings/course_participants/index.md
+++ b/src/pages/en/utol/lecturers/settings/course_participants/index.md
@@ -96,7 +96,7 @@ Please pay attention to the following points when registering course participant
 
     * When adding a user with a UTokyo Account categorized as a student, select “Search students”. When adding a faculty or a staff member, select “Search a faculty and staff”.
     * A user whose UTokyo Account has the status of both “Faculty staff” and “Student” can be searched with both “Search student” and “Search a faculty and staff”.
-4. Enter the information of the user you wish to add, and search.
+4. Enter the information of the user you wish to add, and search. (When searching by name, please insert a half-width space between the first and last name.)
     * Search Students: You can search students by User ID, Student ID or Name.
     * Search faculty and staff: You can search faculty and staff by User ID and Name.
 5. Select the users you would like to add, shown in the search result, by ticking the boxes in the checkbox on the left side of the list.
diff --git a/src/pages/utol/lecturers/settings/course_participants/index.md b/src/pages/utol/lecturers/settings/course_participants/index.md
index 1ba8fb8b1d..db398b4374 100644
--- a/src/pages/utol/lecturers/settings/course_participants/index.md
+++ b/src/pages/utol/lecturers/settings/course_participants/index.md
@@ -94,7 +94,7 @@ breadcrumb:
     ![](search.png){:.medium}
     - UTokyo Accountの種別が学生のユーザを追加するときは「学生検索」を，教職員のユーザを追加するときは「教職員検索」を選択してください．
     - UTokyo Accountの種別が「教職員/学生」のユーザは，「学生検索」「教職員検索」のどちらからでも検索できます．
-4. 追加したいユーザの情報を入力して検索してください．
+4. 追加したいユーザの情報を入力して検索してください．(氏名で検索する場合，姓名の間に半角スペースを入れて検索してください．)
     - 学生検索：ユーザID，学生証番号，氏名のいずれかで検索できます．
     - 教職員検索：ユーザIDまたは氏名で検索できます．
 5. 検索結果に表示されたユーザ一覧の中から，追加したいユーザを一覧の左端にあるチェックボックスで選択してください．