diff --git a/src/test/transaction_tests.cpp b/src/test/transaction_tests.cpp
--- a/src/test/transaction_tests.cpp
+++ b/src/test/transaction_tests.cpp
@@ -837,6 +837,18 @@
     reason.clear();
     BOOST_CHECK(!IsStandardTx(CTransaction(t), reason));
     BOOST_CHECK_EQUAL(reason, "scriptsig-size");
+
+    // Check bare multisig (standard if policy flag fIsBareMultisigStd is set)
+    fIsBareMultisigStd = true;
+    // simple 1-of-1
+    t.vout[0].scriptPubKey = GetScriptForMultisig(1, {key.GetPubKey()});
+    t.vin[0].scriptSig = CScript() << std::vector<uint8_t>(65, 0);
+    BOOST_CHECK(IsStandardTx(CTransaction(t), reason));
+
+    fIsBareMultisigStd = false;
+    reason.clear();
+    BOOST_CHECK(!IsStandardTx(CTransaction(t), reason));
+    BOOST_CHECK_EQUAL(reason, "bare-multisig");
 }
 
 BOOST_AUTO_TEST_CASE(txsize_activation_test) {