diff --git a/test/yulPhaser/TestHelpers.h b/test/yulPhaser/TestHelpers.h
index 2bf755b18..514d2eda7 100644
--- a/test/yulPhaser/TestHelpers.h
+++ b/test/yulPhaser/TestHelpers.h
@@ -33,12 +33,39 @@
 #include <tools/yulPhaser/Mutations.h>
 #include <tools/yulPhaser/Population.h>
 
+#include <boost/test/tools/detail/print_helper.hpp>
+
 #include <cassert>
 #include <functional>
 #include <map>
 #include <string>
+#include <tuple>
 #include <vector>
 
+// OPERATORS FOR BOOST::TEST
+
+/// Output operator for arbitrary two-element tuples.
+/// Necessary to make BOOST_TEST() work with such tuples.
+template<typename T1, typename T2>
+std::ostream& operator<<(std::ostream& _output, std::tuple<T1, T2> const& _tuple)
+{
+	_output << "(" << std::get<0>(_tuple) << ", " << std::get<1>(_tuple) << ")";
+	return _output;
+}
+
+namespace boost::test_tools::tt_detail
+{
+
+// Boost won't find find the << operator unless we put it in the std namespace which is illegal.
+// The recommended solution is to overload print_log_value<> struct and make it use our global operator.
+template<typename T1,typename T2>
+struct print_log_value<std::tuple<T1, T2>>
+{
+	void operator()(std::ostream& _output, std::tuple<T1, T2> const& _tuple) { ::operator<<(_output, _tuple); }
+};
+
+}
+
 namespace solidity::phaser::test
 {