diff --git a/tests/GenericCoreTests/core_test.cpp b/tests/GenericCoreTests/core_test.cpp
index 4ee7d36..a30ac06 100644
--- a/tests/GenericCoreTests/core_test.cpp
+++ b/tests/GenericCoreTests/core_test.cpp
@@ -4,6 +4,10 @@
 
 #include "../../libs/GenericCore/genericcore.h"
 
+QT_BEGIN_NAMESPACE
+inline void PrintTo(const QString& qString, ::std::ostream* os) { *os << qUtf8Printable(qString); }
+QT_END_NAMESPACE
+
 TEST(CoreTests, TestEqualString) {
   const auto expected = "GenericCore (Version x.y.z)";
   auto core           = std::make_unique<GenericCore>();