diff --git a/programs/cardinal-rewards-center/src/reward_distribution/reward_distributor/init_reward_distributor.rs b/programs/cardinal-rewards-center/src/reward_distribution/reward_distributor/init_reward_distributor.rs
index 079383ab..623242a6 100644
--- a/programs/cardinal-rewards-center/src/reward_distribution/reward_distributor/init_reward_distributor.rs
+++ b/programs/cardinal-rewards-center/src/reward_distribution/reward_distributor/init_reward_distributor.rs
@@ -32,7 +32,7 @@ pub struct InitRewardDistributorCtx<'info> {
         bump,
     )]
     reward_distributor: Box<Account<'info, RewardDistributor>>,
-    #[account(constraint = authority.key() != stake_pool.authority.key() @ ErrorCode::InvalidAuthority)]
+    #[account(constraint = authority.key() == stake_pool.authority.key() @ ErrorCode::InvalidAuthority)]
     stake_pool: Box<Account<'info, StakePool>>,
     #[account(mut)]
     reward_mint: Box<Account<'info, Mint>>,
diff --git a/tests/reward-distribution/claim-rewards-sol.test.ts b/tests/reward-distribution/claim-rewards-sol.test.ts
index 63dd15b3..6bbe92cf 100644
--- a/tests/reward-distribution/claim-rewards-sol.test.ts
+++ b/tests/reward-distribution/claim-rewards-sol.test.ts
@@ -6,12 +6,7 @@ import {
   getAssociatedTokenAddressSync,
 } from "@solana/spl-token";
 import type { PublicKey } from "@solana/web3.js";
-import {
-  Keypair,
-  LAMPORTS_PER_SOL,
-  SystemProgram,
-  Transaction,
-} from "@solana/web3.js";
+import { Keypair, SystemProgram, Transaction } from "@solana/web3.js";
 import { BN } from "bn.js";
 
 import {
@@ -43,8 +38,6 @@ const REWARD_AMOUNT = 2;
 let mintId: PublicKey;
 let rewardMintId: PublicKey;
 
-const PAYMENT_AMOUNT = 0.005 * LAMPORTS_PER_SOL;
-
 beforeAll(async () => {
   provider = await getProvider();
   const mintKeypair = Keypair.generate();
@@ -346,5 +339,12 @@ test("Claim rewards", async () => {
   const balanceAfter = await provider.connection.getBalance(
     provider.wallet.publicKey
   );
-  expect(balanceBefore - PAYMENT_AMOUNT).toBeGreaterThan(balanceAfter);
+  const defaultPaymentInfo = await fetchIdlAccount(
+    provider.connection,
+    DEFAULT_PAYMENT_INFO,
+    "paymentInfo"
+  );
+  expect(balanceBefore - balanceAfter).toBeGreaterThan(
+    defaultPaymentInfo.parsed.paymentAmount.toNumber()
+  );
 });