diff --git a/lib/actions/user-actions.js b/lib/actions/user-actions.js
--- a/lib/actions/user-actions.js
+++ b/lib/actions/user-actions.js
@@ -85,7 +85,10 @@
   SubscriptionUpdateRequest,
   SubscriptionUpdateResult,
 } from '../types/subscription-types.js';
-import { thickThreadTypes } from '../types/thread-types-enum.js';
+import {
+  thickThreadTypes,
+  threadTypeIsThick,
+} from '../types/thread-types-enum.js';
 import type { RawThreadInfos } from '../types/thread-types.js';
 import {
   userActionsP2PMessageTypes,
@@ -1299,17 +1302,10 @@
     };
   };
 
-type UseUpdateSubscriptionInput = $ReadOnly<
-  | {
-      +thick: false,
-      ...SubscriptionUpdateRequest,
-    }
-  | {
-      +thick: true,
-      +threadInfo: ThreadInfo,
-      ...SubscriptionUpdateRequest,
-    },
->;
+type UseUpdateSubscriptionInput = $ReadOnly<{
+  +threadInfo: ThreadInfo,
+  ...SubscriptionUpdateRequest,
+}>;
 function useUpdateSubscription(): (
   input: UseUpdateSubscriptionInput,
 ) => Promise<SubscriptionUpdateResult> {
@@ -1321,8 +1317,8 @@
 
   return React.useCallback(
     async (input: UseUpdateSubscriptionInput) => {
-      if (!input.thick) {
-        const { thick, ...rest } = input;
+      if (!threadTypeIsThick(input.threadInfo.type)) {
+        const { threadInfo, ...rest } = input;
         return await keyserverCall({ ...rest });
       }
 
diff --git a/lib/shared/thread-settings-notifications-utils.js b/lib/shared/thread-settings-notifications-utils.js
--- a/lib/shared/thread-settings-notifications-utils.js
+++ b/lib/shared/thread-settings-notifications-utils.js
@@ -11,7 +11,6 @@
 import { createLoadingStatusSelector } from '../selectors/loading-selectors.js';
 import { threadInfoSelector } from '../selectors/thread-selectors.js';
 import type { ThreadInfo } from '../types/minimally-encoded-thread-permissions-types.js';
-import { threadTypeIsThick } from '../types/thread-types-enum.js';
 import { useDispatchActionPromise } from '../utils/redux-promise-utils.js';
 import { useSelector } from '../utils/redux-utils.js';
 
@@ -87,16 +86,10 @@
         pushNotifs: notificationSettings === 'home',
       },
     };
-    const updateSubscriptionInput = threadTypeIsThick(threadInfo.type)
-      ? {
-          thick: true,
-          threadInfo,
-          ...updateSubscriptionRequest,
-        }
-      : {
-          thick: false,
-          ...updateSubscriptionRequest,
-        };
+    const updateSubscriptionInput = {
+      threadInfo,
+      ...updateSubscriptionRequest,
+    };
 
     const res = await callUpdateSubscription(updateSubscriptionInput);