diff --git a/api/assets/schemas.json b/api/assets/schemas.json
index 3f760c3..9c34f96 100644
--- a/api/assets/schemas.json
+++ b/api/assets/schemas.json
@@ -713,7 +713,10 @@
         "type": "object",
         "properties": {
             "target_user_id": {
-                "type": "string"
+                "type": [
+                    "null",
+                    "string"
+                ]
             },
             "target_type": {
                 "type": [
diff --git "a/api/src/routes/channels/\043channel_id/invites.ts" "b/api/src/routes/channels/\043channel_id/invites.ts"
index 2edb4fc..71612e3 100644
--- "a/api/src/routes/channels/\043channel_id/invites.ts"
+++ "b/api/src/routes/channels/\043channel_id/invites.ts"
@@ -8,7 +8,7 @@
 const router: Router = Router();
 
 export interface InviteCreateSchema {
-	target_user_id?: string;
+	target_user_id?: string | null;
 	target_type?: string | null;
 	validate?: string | null; // ? what is this
 	max_age?: number;