diff --git a/src/courseware/course/sidebar/sidebars/discussions/Discussions.scss b/src/courseware/course/sidebar/sidebars/discussions/Discussions.scss
new file mode 100644
index 0000000000..fe94248b26
--- /dev/null
+++ b/src/courseware/course/sidebar/sidebars/discussions/Discussions.scss
@@ -0,0 +1,5 @@
+.discussions-sidebar-frame {
+    @media (max-width: -1 + map-get($grid-breakpoints, "xl")) {
+        max-height: calc(100vh - 65px);
+    }
+}
diff --git a/src/courseware/course/sidebar/sidebars/discussions/DiscussionsSidebar.jsx b/src/courseware/course/sidebar/sidebars/discussions/DiscussionsSidebar.jsx
index 3e98d465e1..5fcee1e1ae 100644
--- a/src/courseware/course/sidebar/sidebars/discussions/DiscussionsSidebar.jsx
+++ b/src/courseware/course/sidebar/sidebars/discussions/DiscussionsSidebar.jsx
@@ -32,7 +32,7 @@ const DiscussionsSidebar = ({ intl }) => {
     >
       <iframe
         src={`${discussionsUrl}?inContextSidebar`}
-        className="d-flex w-100 h-100 border-0"
+        className="d-flex w-100 h-100 border-0 discussions-sidebar-frame"
         title={intl.formatMessage(messages.discussionsTitle)}
         allow="clipboard-write"
         loading="lazy"
diff --git a/src/index.scss b/src/index.scss
index 5be290a9b3..9ac5a39985 100755
--- a/src/index.scss
+++ b/src/index.scss
@@ -393,6 +393,7 @@
 
 // Import component-specific sass files
 @import "courseware/course/celebration/CelebrationModal.scss";
+@import "courseware/course/sidebar/sidebars/discussions/Discussions.scss";
 @import "courseware/course/sidebar/sidebars/notifications/NotificationIcon.scss";
 @import "courseware/course/sequence/lock-paywall/LockPaywall.scss";
 @import "shared/streak-celebration/StreakCelebrationModal.scss";
@@ -402,7 +403,7 @@
 @import "generic/upgrade-notification/UpgradeNotification.scss";
 @import "generic/upsell-bullets/UpsellBullets.scss";
 @import "course-home/outline-tab/widgets/ProctoringInfoPanel.scss";
-@import "src/course-home/outline-tab/widgets/FlagButton.scss";
+@import "course-home/outline-tab/widgets/FlagButton.scss";
 @import "course-home/progress-tab/course-completion/CompletionDonutChart.scss";
 @import "course-home/progress-tab/grades/course-grade/GradeBar.scss";
 @import "courseware/course/course-exit/CourseRecommendations";