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
@@ -114,6 +114,7 @@
     // all the scripted effects should fail
     QTest::newRow("Fade")              << QStringLiteral("kwin4_effect_fade")         << false;
     QTest::newRow("FadeDesktop")       << QStringLiteral("kwin4_effect_fadedesktop")  << false;
+    QTest::newRow("Fullscreen")        << QStringLiteral("kwin4_effect_fullscreen")   << false;
     QTest::newRow("DialogParent")      << QStringLiteral("kwin4_effect_dialogparent") << false;
     QTest::newRow("Login")             << QStringLiteral("kwin4_effect_login")        << false;
     QTest::newRow("Logout")            << QStringLiteral("kwin4_effect_logout")       << false;
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
@@ -146,6 +146,7 @@
     QTest::newRow("Fade + kwin4_effect + CS")    << QStringLiteral("kwin4_eFfect_fAde")         << true;
     QTest::newRow("FadeDesktop")                 << QStringLiteral("kwin4_effect_fadedesktop")  << true;
     QTest::newRow("FrozenApp")                   << QStringLiteral("kwin4_effect_frozenapp")    << true;
+    QTest::newRow("Fullscreen")                  << QStringLiteral("kwin4_effect_fullscreen")   << true;
     QTest::newRow("DialogParent")                << QStringLiteral("kwin4_effect_dialogparent") << true;
     QTest::newRow("Login")                       << QStringLiteral("kwin4_effect_login")        << true;
     QTest::newRow("Logout")                      << QStringLiteral("kwin4_effect_logout")       << true;
@@ -179,6 +180,7 @@
                     << QStringLiteral("kwin4_effect_fade")
                     << QStringLiteral("kwin4_effect_fadedesktop")
                     << QStringLiteral("kwin4_effect_frozenapp")
+                    << QStringLiteral("kwin4_effect_fullscreen")
                     << QStringLiteral("kwin4_effect_login")
                     << QStringLiteral("kwin4_effect_logout")
                     << QStringLiteral("kwin4_effect_maximize")
@@ -205,6 +207,7 @@
     QTest::newRow("Fade + kwin4_effect + CS")    << QStringLiteral("kwin4_eFfect_fAde")         << true;
     QTest::newRow("FadeDesktop")                 << QStringLiteral("kwin4_effect_fadedesktop")  << true;
     QTest::newRow("FrozenApp")                   << QStringLiteral("kwin4_effect_frozenapp")    << true;
+    QTest::newRow("Fullscreen")                  << QStringLiteral("kwin4_effect_fullscreen")   << true;
     QTest::newRow("DialogParent")                << QStringLiteral("kwin4_effect_dialogparent") << true;
     QTest::newRow("Login")                       << QStringLiteral("kwin4_effect_login")        << true;
     QTest::newRow("Logout")                      << QStringLiteral("kwin4_effect_logout")        << true;
@@ -358,6 +361,7 @@
     plugins.writeEntry(kwin4 + QStringLiteral("fadeEnabled"), false);
     plugins.writeEntry(kwin4 + QStringLiteral("fadedesktopEnabled"), false);
     plugins.writeEntry(kwin4 + QStringLiteral("frozenappEnabled"), false);
+    plugins.writeEntry(kwin4 + QStringLiteral("fullscreenEnabled"), false);
     plugins.writeEntry(kwin4 + QStringLiteral("loginEnabled"), false);
     plugins.writeEntry(kwin4 + QStringLiteral("logoutEnabled"), false);
     plugins.writeEntry(kwin4 + QStringLiteral("maximizeEnabled"), false);