Index: kwin/effects/CMakeLists.txt
===================================================================
--- kwin/effects/CMakeLists.txt	(revision 827265)
+++ kwin/effects/CMakeLists.txt	(revision 827264)
@@ -50,7 +50,7 @@
     shadow.cpp
     showfps.cpp
     showpaint.cpp
-    #taskbarthumbnail.cpp # Enable when plasma has tooltips again
+    taskbarthumbnail.cpp
     thumbnailaside.cpp
     zoom.cpp
     )
@@ -72,7 +72,7 @@
     shadow.desktop
     showfps.desktop
     showpaint.desktop
-    #taskbarthumbnail.desktop # Enable when plasma has tooltips again
+    taskbarthumbnail.desktop
     thumbnailaside.desktop
     zoom.desktop
     DESTINATION ${SERVICES_INSTALL_DIR}/kwin )