diff --git a/include/internal/catch_test_case_registry_impl.hpp b/include/internal/catch_test_case_registry_impl.hpp
index b25ed9a2..41170052 100644
--- a/include/internal/catch_test_case_registry_impl.hpp
+++ b/include/internal/catch_test_case_registry_impl.hpp
@@ -105,6 +105,7 @@ namespace Catch {
         std::vector<TestCase> m_functionsInOrder;
         std::vector<TestCase> m_nonHiddenFunctions;
         size_t m_unnamedCount;
+        std::ios_base::Init m_ostreamInit; // Forces cout/ cerr to be initialised
     };
 
     ///////////////////////////////////////////////////////////////////////////