diff --git a/packages/backend/src/server/api/endpoints/i/read-announcement.ts b/packages/backend/src/server/api/endpoints/i/read-announcement.ts
index e44445b1b..d0dfa6657 100644
--- a/packages/backend/src/server/api/endpoints/i/read-announcement.ts
+++ b/packages/backend/src/server/api/endpoints/i/read-announcement.ts
@@ -30,7 +30,7 @@ export const paramDef = {
 
 export default define(meta, paramDef, async (ps, user) => {
 	// Check if announcement exists
-	const exist = await Announcements.findOneBy({
+	const exist = await Announcements.exist({
 		where: { id: ps.announcementId },
 	});
 
@@ -39,12 +39,14 @@ export default define(meta, paramDef, async (ps, user) => {
 	}
 
 	// Check if already read
-	const read = await AnnouncementReads.findOneBy({
-		announcementId: ps.announcementId,
-		userId: user.id,
+	const read = await AnnouncementReads.exist({
+		where: {
+			announcementId: ps.announcementId,
+			userId: user.id,
+		},
 	});
 
-	if (read != null) {
+	if (read) {
 		return;
 	}
 
diff --git a/packages/backend/src/server/api/endpoints/users/lists/push.ts b/packages/backend/src/server/api/endpoints/users/lists/push.ts
index 10b9acc42..6f3e09fcb 100644
--- a/packages/backend/src/server/api/endpoints/users/lists/push.ts
+++ b/packages/backend/src/server/api/endpoints/users/lists/push.ts
@@ -52,14 +52,14 @@ export const paramDef = {
 
 export default define(meta, paramDef, async (ps, me) => {
 	// Fetch the list
-	const userList = await UserLists.exist({
+	const listExists = await UserLists.exist({
 		where: {
 			id: ps.listId,
 			userId: me.id,
 		},
 	});
 
-	if (!exist) {
+	if (!listExists) {
 		throw new ApiError(meta.errors.noSuchList);
 	}
 
@@ -72,18 +72,22 @@ export default define(meta, paramDef, async (ps, me) => {
 
 	// Check blocking
 	if (user.id !== me.id) {
-		const block = await Blockings.findOneBy({
-			blockerId: user.id,
-			blockeeId: me.id,
+		const isBlocked = await Blockings.exist({
+			where: {
+				blockerId: user.id,
+				blockeeId: me.id,
+			},
 		});
-		if (block) {
+		if (isBlocked) {
 			throw new ApiError(meta.errors.youHaveBeenBlocked);
 		}
 	}
 
-	const exist = await UserListJoinings.findOneBy({
-		userListId: userList.id,
-		userId: user.id,
+	const exist = await UserListJoinings.exist({
+		where: {
+			userListId: userList.id,
+			userId: user.id,
+		},
 	});
 
 	if (exist) {