diff --git a/src/test/rpc_wallet_tests.cpp b/src/test/rpc_wallet_tests.cpp
index af34e496..eea249b1 100644
--- a/src/test/rpc_wallet_tests.cpp
+++ b/src/test/rpc_wallet_tests.cpp
@@ -65,7 +65,7 @@ BOOST_AUTO_TEST_CASE(rpc_wallet)
     // Test RPC calls for various wallet statistics
     Value r;
 
-    LOCK(pwalletMain->cs_wallet);
+    LOCK2(cs_main, pwalletMain->cs_wallet);
 
     BOOST_CHECK_NO_THROW(CallRPC("listunspent"));
     BOOST_CHECK_THROW(CallRPC("listunspent string"), runtime_error);
diff --git a/src/test/script_P2SH_tests.cpp b/src/test/script_P2SH_tests.cpp
index 03dbdde5..9b1290e0 100644
--- a/src/test/script_P2SH_tests.cpp
+++ b/src/test/script_P2SH_tests.cpp
@@ -50,6 +50,7 @@ BOOST_AUTO_TEST_SUITE(script_P2SH_tests)
 
 BOOST_AUTO_TEST_CASE(sign)
 {
+    LOCK(cs_main);
     // Pay-to-script-hash looks like this:
     // scriptSig:    <sig> <sig...> <serialized_script>
     // scriptPubKey: HASH160 <hash> EQUAL
@@ -147,6 +148,7 @@ BOOST_AUTO_TEST_CASE(norecurse)
 
 BOOST_AUTO_TEST_CASE(set)
 {
+    LOCK(cs_main);
     // Test the CScript::Set* methods
     CBasicKeyStore keystore;
     CKey key[4];
@@ -250,6 +252,7 @@ BOOST_AUTO_TEST_CASE(switchover)
 
 BOOST_AUTO_TEST_CASE(AreInputsStandard)
 {
+    LOCK(cs_main);
     CCoinsView coinsDummy;
     CCoinsViewCache coins(coinsDummy);
     CBasicKeyStore keystore;
diff --git a/src/test/transaction_tests.cpp b/src/test/transaction_tests.cpp
index 2ebb652f..24647950 100644
--- a/src/test/transaction_tests.cpp
+++ b/src/test/transaction_tests.cpp
@@ -254,6 +254,7 @@ BOOST_AUTO_TEST_CASE(test_Get)
 
 BOOST_AUTO_TEST_CASE(test_IsStandard)
 {
+    LOCK(cs_main);
     CBasicKeyStore keystore;
     CCoinsView coinsDummy;
     CCoinsViewCache coins(coinsDummy);