diff --git a/functions/db/deck/is-user-deck-exists.ts b/functions/db/deck/is-user-deck-exists.ts
new file mode 100644
index 00000000..a0d0c24a
--- /dev/null
+++ b/functions/db/deck/is-user-deck-exists.ts
@@ -0,0 +1,18 @@
+import { EnvType } from "../../env/env-schema.ts";
+import { getDatabase } from "../get-database.ts";
+import { DatabaseException } from "../database-exception.ts";
+
+export const isUserDeckExists = async (
+  envSafe: EnvType,
+  body: { user_id: number; deck_id: number },
+) => {
+  const db = getDatabase(envSafe);
+
+  const userDeck = await db.from("user_deck").select().match(body);
+
+  if (userDeck.error) {
+    throw new DatabaseException(userDeck.error);
+  }
+
+  return userDeck.data.length ? userDeck.data[0] : null;
+};
diff --git a/functions/remove-deck-from-mine.ts b/functions/remove-deck-from-mine.ts
index cd0c30d6..10d82cb3 100644
--- a/functions/remove-deck-from-mine.ts
+++ b/functions/remove-deck-from-mine.ts
@@ -6,8 +6,8 @@ import { envSchema } from "./env/env-schema.ts";
 import { createBadRequestResponse } from "./lib/json-response/create-bad-request-response.ts";
 import { createJsonResponse } from "./lib/json-response/create-json-response.ts";
 import { removeDeckFromMineDb } from "./db/deck/remove-deck-from-mine-db.ts";
-import { getDeckByIdAndAuthorId } from "./db/deck/get-deck-by-id-and-author-id.ts";
 import { createForbiddenRequestResponse } from "./lib/json-response/create-forbidden-request-response.ts";
+import { isUserDeckExists } from "./db/deck/is-user-deck-exists.ts";
 
 const requestSchema = z.object({
   deckId: z.number(),
@@ -26,12 +26,11 @@ export const onRequestPost = handleError(async ({ env, request }) => {
 
   const envSafe = envSchema.parse(env);
 
-  const canEdit = await getDeckByIdAndAuthorId(
-    envSafe,
-    input.data.deckId,
-    user.id,
-  );
-  if (!canEdit) {
+  const userDeckExists = await isUserDeckExists(envSafe, {
+    user_id: user.id,
+    deck_id: input.data.deckId,
+  });
+  if (!userDeckExists) {
     return createForbiddenRequestResponse();
   }