diff --git a/src/tests/dolphinmainwindowtest.cpp b/src/tests/dolphinmainwindowtest.cpp
index 70ec8dba04..eee3871167 100644
--- a/src/tests/dolphinmainwindowtest.cpp
+++ b/src/tests/dolphinmainwindowtest.cpp
@@ -25,6 +25,7 @@
 #include <KActionCollection>
 
 #include <QSignalSpy>
+#include <QStandardPaths>
 #include <QTest>
 
 class DolphinMainWindowTest : public QObject
@@ -32,6 +33,7 @@ class DolphinMainWindowTest : public QObject
     Q_OBJECT
 
 private slots:
+    void initTestCase();
     void init();
     void testClosingTabsWithSearchBoxVisible();
     void testActiveViewAfterClosingSplitView_data();
@@ -42,6 +44,11 @@ private:
     QScopedPointer<DolphinMainWindow> m_mainWindow;
 };
 
+void DolphinMainWindowTest::initTestCase()
+{
+    QStandardPaths::setTestModeEnabled(true);
+}
+
 void DolphinMainWindowTest::init()
 {
     m_mainWindow.reset(new DolphinMainWindow());