diff --git a/src/wallet/test/coinselector_tests.cpp b/src/wallet/test/coinselector_tests.cpp
--- a/src/wallet/test/coinselector_tests.cpp
+++ b/src/wallet/test/coinselector_tests.cpp
@@ -231,6 +231,22 @@
         BOOST_CHECK(!SelectCoinsBnB(utxo_pool, 1 * CENT, 2 * CENT, selection,
                                     value_ret, not_input_fees));
     }
+
+    // Make sure that effective value is working in SelectCoinsMinConf when BnB
+    // is used
+    CoinSelectionParams coin_selection_params_bnb(true, 0, 0,
+                                                  CFeeRate(3000 * SATOSHI), 0);
+    CoinSet setCoinsRet;
+    Amount nValueRet;
+    bool bnb_used;
+    empty_wallet();
+    add_coin(m_wallet, SATOSHI);
+    // Make sure that it has a negative effective value. The next check should
+    // assert if this somehow got through. Otherwise it will fail
+    vCoins.at(0).nInputBytes = 40;
+    BOOST_CHECK(!m_wallet.SelectCoinsMinConf(
+        1 * CENT, filter_standard, vCoins, setCoinsRet, nValueRet,
+        coin_selection_params_bnb, bnb_used));
 }
 
 BOOST_AUTO_TEST_CASE(knapsack_solver_test) {