diff --git a/src/qtcommon/Platform_qt.cpp b/src/qtcommon/Platform_qt.cpp
index 8dfc42f9..c4d00e18 100644
--- a/src/qtcommon/Platform_qt.cpp
+++ b/src/qtcommon/Platform_qt.cpp
@@ -186,4 +186,12 @@ void Platform_qt::tests_deinitPlatform_impl()
     delete qApp;
 }
 
+/*static*/
+extern quintptr Q_CORE_EXPORT qtHookData[];
+bool Platform_qt::isGammaray()
+{
+    static bool is = qtHookData[3] != 0;
+    return is;
+}
+
 #endif
diff --git a/src/qtcommon/Platform_qt.h b/src/qtcommon/Platform_qt.h
index 844fce03..497e58b2 100644
--- a/src/qtcommon/Platform_qt.h
+++ b/src/qtcommon/Platform_qt.h
@@ -34,6 +34,7 @@ public:
     void sendEvent(View *, QEvent *) const override;
 
 #ifdef DOCKS_DEVELOPER_MODE
+    static bool isGammaray();
     bool tests_waitForWindowActive(std::shared_ptr<Window>, int timeout = 5000) const override;
     bool tests_waitForEvent(QObject *w, QEvent::Type type, int timeout = 5000) const override;
     bool tests_waitForEvent(View *, QEvent::Type type, int timeout = 5000) const override;
diff --git a/tests/Testing.cpp b/tests/Testing.cpp
index c9caea40..db3cab48 100644
--- a/tests/Testing.cpp
+++ b/tests/Testing.cpp
@@ -11,6 +11,7 @@
 
 #include "Testing.h"
 #include "DockRegistry_p.h"
+#include "qtcommon/Platform_qt.h"
 
 #include <QGuiApplication>
 #include <QTest>
@@ -23,17 +24,10 @@ using namespace KDDockWidgets;
 using namespace KDDockWidgets::Controllers;
 using namespace KDDockWidgets::Testing;
 
-extern quintptr Q_CORE_EXPORT qtHookData[];
 static QString s_expectedWarning;
 static WarningObserver *s_warningObserver = nullptr;
 static QtMessageHandler s_original = nullptr;
 
-static bool isGammaray()
-{
-    static bool is = qtHookData[3] != 0;
-    return is;
-}
-
 static bool shouldBlacklistWarning(const QString &msg, const QString &category)
 {
     if (category == QLatin1String("qt.qpa.xcb"))
@@ -70,7 +64,7 @@ static void fatalWarningsMessageHandler(QtMsgType t, const QMessageLogContext &c
         if (!s_expectedWarning.isEmpty() && msg.contains(s_expectedWarning))
             return;
 
-        if (!isGammaray() && !qEnvironmentVariableIsSet("NO_FATAL")) {
+        if (!Platform_qt::isGammaray() && !qEnvironmentVariableIsSet("NO_FATAL")) {
 
             if (s_warningObserver)
                 s_warningObserver->onFatal();