diff --git a/contracts/red-bank/src/contract.rs b/contracts/red-bank/src/contract.rs
index e467c5c76..cbbb0687b 100644
--- a/contracts/red-bank/src/contract.rs
+++ b/contracts/red-bank/src/contract.rs
@@ -51,12 +51,18 @@ pub fn execute(
             denom,
             amount,
             recipient,
-        } => execute::withdraw(deps, env, info, denom, amount, recipient),
+        } => {
+            cw_utils::nonpayable(&info)?;
+            execute::withdraw(deps, env, info, denom, amount, recipient)
+        }
         ExecuteMsg::Borrow {
             denom,
             amount,
             recipient,
-        } => execute::borrow(deps, env, info, denom, amount, recipient),
+        } => {
+            cw_utils::nonpayable(&info)?;
+            execute::borrow(deps, env, info, denom, amount, recipient)
+        }
         ExecuteMsg::Repay {
             on_behalf_of,
         } => {
@@ -84,7 +90,10 @@ pub fn execute(
         ExecuteMsg::UpdateAssetCollateralStatus {
             denom,
             enable,
-        } => execute::update_asset_collateral_status(deps, env, info, denom, enable),
+        } => {
+            cw_utils::nonpayable(&info)?;
+            execute::update_asset_collateral_status(deps, env, info, denom, enable)
+        }
     }
 }
 
diff --git a/contracts/red-bank/tests/test_borrow.rs b/contracts/red-bank/tests/test_borrow.rs
index cb83f7bc8..bef237ba9 100644
--- a/contracts/red-bank/tests/test_borrow.rs
+++ b/contracts/red-bank/tests/test_borrow.rs
@@ -945,7 +945,7 @@ fn cannot_borrow_if_market_not_enabled() {
 
     // Check error when borrowing not allowed on market
     let env = mock_env(MockEnvParams::default());
-    let info = cosmwasm_std::testing::mock_info("borrower", &[coin(110000, "somecoin")]);
+    let info = cosmwasm_std::testing::mock_info("borrower", &[]);
     let msg = ExecuteMsg::Borrow {
         denom: "somecoin".to_string(),
         amount: Uint128::new(1000),
diff --git a/contracts/red-bank/tests/test_payment.rs b/contracts/red-bank/tests/test_payment.rs
new file mode 100644
index 000000000..588997c7a
--- /dev/null
+++ b/contracts/red-bank/tests/test_payment.rs
@@ -0,0 +1,62 @@
+mod helpers;
+
+use cosmwasm_std::{
+    coins,
+    testing::{mock_env, mock_info},
+    Uint128,
+};
+use cw_utils::PaymentError;
+use helpers::th_setup;
+use mars_red_bank::contract;
+use mars_red_bank_types::red_bank::ExecuteMsg;
+
+/// The Red Bank contract has 6 user-facing functions: deposit, withdraw, borrow,
+/// repay, liquidate, and update_asset_collateral_status; amount these, 3 do not
+/// expect the user to send any payment. This test verifies that they properly
+/// reject if a user sends an expected payment.
+///
+/// This is in response to this mainnet tx, where a user sends a payment with a
+/// `withdraw` msg:
+/// https://www.mintscan.io/osmosis/txs/2F214EE3A22DC93E61DE9A49BE616B317EB28AFC5E43B0AF07800AC7E6435522
+#[test]
+fn rejecting_unexpected_payments() {
+    let mut deps = th_setup(&[]);
+
+    let err = contract::execute(
+        deps.as_mut(),
+        mock_env(),
+        mock_info("larry", &coins(123, "uosmo")),
+        ExecuteMsg::Withdraw {
+            denom: "".into(),
+            amount: None,
+            recipient: None,
+        },
+    )
+    .unwrap_err();
+    assert_eq!(err, PaymentError::NonPayable {}.into());
+
+    let err = contract::execute(
+        deps.as_mut(),
+        mock_env(),
+        mock_info("larry", &coins(234, "umars")),
+        ExecuteMsg::Borrow {
+            denom: "".into(),
+            amount: Uint128::zero(),
+            recipient: None,
+        },
+    )
+    .unwrap_err();
+    assert_eq!(err, PaymentError::NonPayable {}.into());
+
+    let err = contract::execute(
+        deps.as_mut(),
+        mock_env(),
+        mock_info("larry", &coins(345, "uluna")),
+        ExecuteMsg::UpdateAssetCollateralStatus {
+            denom: "".into(),
+            enable: false,
+        },
+    )
+    .unwrap_err();
+    assert_eq!(err, PaymentError::NonPayable {}.into());
+}
diff --git a/scripts/package.json b/scripts/package.json
index c20fcf870..70eac465e 100644
--- a/scripts/package.json
+++ b/scripts/package.json
@@ -1,6 +1,7 @@
 {
   "name": "scripts",
   "version": "1.0.0",
+  "license": "GPL-3.0-or-later",
   "scripts": {
     "deploy:osmosis-testnet": "yarn build && node build/deploy/osmosis/testIndex.js",
     "deploy:osmosis-mainnet": "yarn build && node build/deploy/osmosis/mainIndex.js",