diff --git a/effects.cpp b/effects.cpp
--- a/effects.cpp
+++ b/effects.cpp
@@ -338,6 +338,11 @@
             emit windowHidden(c->effectWindow());
         }
     );
+    connect(c, &AbstractClient::fullScreenChanged, this,
+        [this, c]() {
+            emit windowFullScreenStateChanged(c->effectWindow(), c->isFullScreen());
+        }
+    );
 }
 
 void EffectsHandlerImpl::setupClientConnections(Client* c)
diff --git a/effects/CMakeLists.txt b/effects/CMakeLists.txt
--- a/effects/CMakeLists.txt
+++ b/effects/CMakeLists.txt
@@ -135,6 +135,7 @@
 add_subdirectory( fade )
 add_subdirectory( fadedesktop )
 add_subdirectory( frozenapp )
+add_subdirectory( fullscreen )
 add_subdirectory( login )
 add_subdirectory( logout )
 add_subdirectory( maximize )
diff --git a/effects/fullscreen/CMakeLists.txt b/effects/fullscreen/CMakeLists.txt
new file mode 100644
--- /dev/null
+++ b/effects/fullscreen/CMakeLists.txt
@@ -0,0 +1 @@
+add_subdirectory( package )
diff --git a/effects/fullscreen/package/CMakeLists.txt b/effects/fullscreen/package/CMakeLists.txt
new file mode 100644
--- /dev/null
+++ b/effects/fullscreen/package/CMakeLists.txt
@@ -0,0 +1,6 @@
+install(DIRECTORY contents DESTINATION ${DATA_INSTALL_DIR}/${KWIN_NAME}/effects/kwin4_effect_fullscreen)
+install(FILES metadata.desktop DESTINATION ${DATA_INSTALL_DIR}/${KWIN_NAME}/effects/kwin4_effect_fullscreen)
+
+install(FILES metadata.desktop
+        DESTINATION ${SERVICES_INSTALL_DIR}/${KWIN_NAME}
+        RENAME kwin4_effect_fullscreen.desktop)
diff --git a/effects/fullscreen/package/contents/code/fullscreen.js b/effects/fullscreen/package/contents/code/fullscreen.js
--- a/effects/fullscreen/package/contents/code/fullscreen.js
+++ b/effects/fullscreen/package/contents/code/fullscreen.js
@@ -1,7 +1,7 @@
 /********************************************************************
  This file is part of the KDE project.
 
- Copyright (C) 2012 Martin Gr��lin <mgraesslin@kde.org>
+ Copyright (C) 2012 Martin Gräßlin <mgraesslin@kde.org>
  Copyright (C) 2017 Vlad Zagorodniy <vladzzag@gmail.com>
 
 This program is free software; you can redistribute it and/or modify
diff --git a/effects/fullscreen/package/metadata.desktop b/effects/fullscreen/package/metadata.desktop
--- a/effects/fullscreen/package/metadata.desktop
+++ b/effects/fullscreen/package/metadata.desktop
@@ -1,8 +1,6 @@
 [Desktop Entry]
 Name=Fullscreen
-Name[x-test]=xxFullscreenxx
 Comment=Animates transition to/from fullscreen mode
-Comment[x-test]=xxAnimates transition to/from fullscreen modexx
 Icon=preferences-system-windows-effect-fullscreen
 Encoding=UTF-8
 
diff --git a/libkwineffects/kwineffects.h b/libkwineffects/kwineffects.h
--- a/libkwineffects/kwineffects.h
+++ b/libkwineffects/kwineffects.h
@@ -1695,6 +1695,14 @@
      **/
     void xcbConnectionChanged();
 
+    /**
+     * Signal emitted when fullscreen state of a window changed.
+     * @param w The window whose fullscreen state changed
+     * @param fullscreen The new fullscreen state
+     * @since 5.12
+     **/
+    void windowFullScreenStateChanged(KWin::EffectWindow *w, bool fullScreen);
+
 protected:
     QVector< EffectPair > loaded_effects;
     //QHash< QString, EffectFactory* > effect_factories;