diff --git a/web/components/course/components/SelectCourseDialog.tsx b/web/components/course/components/SelectCourseDialog.tsx
index 9c421aa4..857f6baf 100644
--- a/web/components/course/components/SelectCourseDialog.tsx
+++ b/web/components/course/components/SelectCourseDialog.tsx
@@ -114,7 +114,7 @@ export default function SelectCourseDialog({
               条件に当てはまる授業はありません。
             </p>
           ) : (
-            <ul className="mt-4">
+            <ul className="mt-4 overflow-auto max-h-[300px]">
               {filteredAvailableCourses.map((course) => (
                 <li key={course.id}>
                   <button