diff --git a/src/components/planner/sidebar/CoursesController/ClassSelector.tsx b/src/components/planner/sidebar/CoursesController/ClassSelector.tsx
index a43c9114..8c0b7b96 100644
--- a/src/components/planner/sidebar/CoursesController/ClassSelector.tsx
+++ b/src/components/planner/sidebar/CoursesController/ClassSelector.tsx
@@ -30,6 +30,7 @@ const ClassSelector = ({ course }: Props) => {
 
     if (option.length === 0) {
       setSelectedClassId(null);
+      setDisplay(null);
       return;
     }