diff --git a/src/library-authoring/component-comparison/messages.ts b/src/library-authoring/component-comparison/messages.ts
index 89275918a..ec2f95ed9 100644
--- a/src/library-authoring/component-comparison/messages.ts
+++ b/src/library-authoring/component-comparison/messages.ts
@@ -17,6 +17,16 @@ const messages = defineMessages({
defaultMessage: 'Compare Changes',
description: 'Title used for the compare changes dialog',
},
+ courseContentTitle: {
+ id: 'course-authoring.library-authoring.component-comparison.courseContent',
+ defaultMessage: 'Course content',
+ description: 'Title shown for course content when comparing changes',
+ },
+ publishedLibraryContentTitle: {
+ id: 'course-authoring.library-authoring.component-comparison.publishedLibraryContent',
+ defaultMessage: 'Published library content',
+ description: 'Title shown for published library content when comparing changes',
+ },
});
export default messages;