diff -up plasma-desktop-5.6.4/applets/kickoff/package/contents/ui/Header.qml.user_manager plasma-desktop-5.6.4/applets/kickoff/package/contents/ui/Header.qml
--- plasma-desktop-5.6.4/applets/kickoff/package/contents/ui/Header.qml.user_manager	2016-05-10 11:46:18.000000000 -0500
+++ plasma-desktop-5.6.4/applets/kickoff/package/contents/ui/Header.qml	2016-05-26 06:02:02.251950654 -0500
@@ -97,7 +97,7 @@ Item {
             acceptedButtons: Qt.LeftButton
             cursorShape: Qt.PointingHandCursor
             onClicked: {
-                KCMShell.open("kcm_useraccount")
+                KCMShell.open("user_manager")
             }
         }
     }