diff --git a/packages/backend/src/server/api/endpoints/notes/create.ts b/packages/backend/src/server/api/endpoints/notes/create.ts
index 2e4d316c4..37a0525e2 100644
--- a/packages/backend/src/server/api/endpoints/notes/create.ts
+++ b/packages/backend/src/server/api/endpoints/notes/create.ts
@@ -118,7 +118,7 @@ export const paramDef = {
 			type: 'string',
 			minLength: 1,
 			maxLength: MAX_NOTE_TEXT_LENGTH,
-			nullable: false,
+			nullable: true,
 		},
 		fileIds: {
 			type: 'array',