diff --git a/common/js/types.d.ts b/common/js/types.d.ts
index 86f15ab81..e7f2bf6cd 100644
--- a/common/js/types.d.ts
+++ b/common/js/types.d.ts
@@ -468,7 +468,7 @@ export interface UserGoalDocument extends MongoDBDocument {
 }
 interface MilestoneGoalReference {
     goalID: string;
-    note: string | null;
+    note?: string;
 }
 interface MilestoneSection {
     title: string;
diff --git a/common/src/types.ts b/common/src/types.ts
index 13a473555..8ecd2190c 100644
--- a/common/src/types.ts
+++ b/common/src/types.ts
@@ -644,7 +644,7 @@ export interface UserGoalDocument extends MongoDBDocument {
 
 interface MilestoneGoalReference {
     goalID: string;
-    note: string | null;
+    note?: string;
 }
 
 interface MilestoneSection {