diff --git a/autotests/test_builtin_effectloader.cpp b/autotests/test_builtin_effectloader.cpp
--- a/autotests/test_builtin_effectloader.cpp
+++ b/autotests/test_builtin_effectloader.cpp
@@ -28,6 +28,7 @@
 // Qt
 #include <QtTest>
 #include <QStringList>
+#include <QScopedPointer>
 Q_DECLARE_METATYPE(KWin::CompositingType)
 Q_DECLARE_METATYPE(KWin::LoadEffectFlag)
 Q_DECLARE_METATYPE(KWin::LoadEffectFlags)
@@ -362,7 +363,7 @@
     QFETCH(bool, expected);
     QFETCH(KWin::CompositingType, type);
 
-    MockEffectsHandler mockHandler(type);
+    QScopedPointer<MockEffectsHandler, QScopedPointerDeleteLater> mockHandler(new MockEffectsHandler(type));
     KWin::BuiltInEffectLoader loader;
     KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);
     loader.setConfig(config);
@@ -451,7 +452,7 @@
     QFETCH(KWin::CompositingType, type);
     QFETCH(KWin::LoadEffectFlags, loadFlags);
 
-    MockEffectsHandler mockHandler(type);
+    QScopedPointer<MockEffectsHandler, QScopedPointerDeleteLater> mockHandler(new MockEffectsHandler(type));
     KWin::BuiltInEffectLoader loader;
     KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);
     loader.setConfig(config);
@@ -498,7 +499,7 @@
 
 void TestBuiltInEffectLoader::testLoadAllEffects()
 {
-    MockEffectsHandler mockHandler(KWin::XRenderCompositing);
+    QScopedPointer<MockEffectsHandler, QScopedPointerDeleteLater>mockHandler(new MockEffectsHandler(KWin::XRenderCompositing));
     KWin::BuiltInEffectLoader loader;
 
     KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);
diff --git a/autotests/test_plugin_effectloader.cpp b/autotests/test_plugin_effectloader.cpp
--- a/autotests/test_plugin_effectloader.cpp
+++ b/autotests/test_plugin_effectloader.cpp
@@ -201,7 +201,7 @@
     QFETCH(bool, expected);
     QFETCH(KWin::CompositingType, type);
 
-    MockEffectsHandler mockHandler(type);
+    QScopedPointer<MockEffectsHandler, QScopedPointerDeleteLater> mockHandler(new MockEffectsHandler(type));
     KWin::PluginEffectLoader loader;
     loader.setPluginSubDirectory(QString());
     KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);
@@ -285,8 +285,8 @@
     QFETCH(KWin::LoadEffectFlags, loadFlags);
     QFETCH(bool, enabledByDefault);
 
-    MockEffectsHandler mockHandler(type);
-    mockHandler.setProperty("testEnabledByDefault", enabledByDefault);
+    QScopedPointer<MockEffectsHandler, QScopedPointerDeleteLater> mockHandler(new MockEffectsHandler(type));
+    mockHandler->setProperty("testEnabledByDefault", enabledByDefault);
     KWin::PluginEffectLoader loader;
     loader.setPluginSubDirectory(QString());
     KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);
@@ -341,8 +341,8 @@
 
 void TestPluginEffectLoader::testLoadAllEffects()
 {
-    MockEffectsHandler mockHandler(KWin::OpenGL2Compositing);
-    mockHandler.setProperty("testEnabledByDefault", true);
+    QScopedPointer<MockEffectsHandler, QScopedPointerDeleteLater> mockHandler(new MockEffectsHandler(KWin::OpenGL2Compositing));
+    mockHandler->setProperty("testEnabledByDefault", true);
     KWin::PluginEffectLoader loader;
     loader.setPluginSubDirectory(QString());
 
diff --git a/autotests/test_scripted_effectloader.cpp b/autotests/test_scripted_effectloader.cpp
--- a/autotests/test_scripted_effectloader.cpp
+++ b/autotests/test_scripted_effectloader.cpp
@@ -159,15 +159,15 @@
     QFETCH(QString, name);
     QFETCH(bool, expected);
 
-    MockEffectsHandler mockHandler(KWin::XRenderCompositing);
+    QScopedPointer<MockEffectsHandler, QScopedPointerDeleteLater> mockHandler(new MockEffectsHandler(KWin::XRenderCompositing));
     KWin::ScriptedEffectLoader loader;
     QCOMPARE(loader.hasEffect(name), expected);
 
     // each available effect should also be supported
     QCOMPARE(loader.isEffectSupported(name), expected);
 
     if (expected) {
-        mockHandler.setAnimationsSupported(false);
+        mockHandler->setAnimationsSupported(false);
         QVERIFY(!loader.isEffectSupported(name));
     }
 }
@@ -216,7 +216,7 @@
     QFETCH(QString, name);
     QFETCH(bool, expected);
 
-    MockEffectsHandler mockHandler(KWin::XRenderCompositing);
+    QScopedPointer<MockEffectsHandler, QScopedPointerDeleteLater> mockHandler(new MockEffectsHandler(KWin::XRenderCompositing));
     KWin::ScriptedEffectLoader loader;
     KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);
     loader.setConfig(config);
@@ -289,7 +289,7 @@
     QFETCH(bool, expected);
     QFETCH(KWin::LoadEffectFlags, loadFlags);
 
-    MockEffectsHandler mockHandler(KWin::XRenderCompositing);
+    QScopedPointer<MockEffectsHandler, QScopedPointerDeleteLater> mockHandler(new MockEffectsHandler(KWin::XRenderCompositing));
     KWin::ScriptedEffectLoader loader;
     KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);
     loader.setConfig(config);
@@ -343,7 +343,7 @@
 
 void TestScriptedEffectLoader::testLoadAllEffects()
 {
-    MockEffectsHandler mockHandler(KWin::XRenderCompositing);
+    QScopedPointer<MockEffectsHandler, QScopedPointerDeleteLater> mockHandler(new MockEffectsHandler(KWin::XRenderCompositing));
     KWin::ScriptedEffectLoader loader;
 
     KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);