diff --git a/src/test/txvalidationcache_tests.cpp b/src/test/txvalidationcache_tests.cpp
--- a/src/test/txvalidationcache_tests.cpp
+++ b/src/test/txvalidationcache_tests.cpp
@@ -444,6 +444,7 @@
 }
 
 BOOST_AUTO_TEST_CASE(scriptcache_values) {
+    LOCK(cs_main);
     // Test insertion and querying of keys&values from the script cache.
 
     // Define a couple of macros (handier than functions since errors will print