diff --git a/test/liblll/ExecutionFramework.h b/test/liblll/ExecutionFramework.h
index 37162e7fe..58e1f0add 100644
--- a/test/liblll/ExecutionFramework.h
+++ b/test/liblll/ExecutionFramework.h
@@ -52,6 +52,9 @@ public:
 		std::map<std::string, Address> const& _libraryAddresses = std::map<std::string, Address>()
 	) override
 	{
+		BOOST_REQUIRE(_contractName.empty());
+		BOOST_REQUIRE(_libraryAddresses.empty());
+
 		std::vector<std::string> errors;
 		bytes bytecode = eth::compileLLL(_sourceCode, m_optimize, &errors);
 		if (!errors.empty())