diff --git a/README.md b/README.md
index 570aa8c..8d7fd49 100644
--- a/README.md
+++ b/README.md
@@ -55,7 +55,7 @@ Configuration file format for /etc/lightdm/slick-greeter.conf
     # high-contrast=Whether to use a high contrast theme (true or false)
     # screen-reader=Whether to enable the screen reader (true or false)
     # play-ready-sound=A sound file to play when the greeter is ready
-    # hidden-users=List of usernames that are hidden until a special key combination is hit
+    # hidden-users=List of usernames (separated by semicolons) that are hidden until Ctr+Alt+Shift is pressed
     # group-filter=List of groups that users must be part of to be shown (empty list shows all users)
     # enable-hidpi=Whether to enable HiDPI support (on/off/auto)
     # only-on-monitor=Sets the monitor on which to show the login window, -1 means "follow the mouse"
diff --git a/src/main-window.vala b/src/main-window.vala
index 07b1224..52bee23 100644
--- a/src/main-window.vala
+++ b/src/main-window.vala
@@ -340,19 +340,16 @@ public class MainWindow : Gtk.Window
         if (stack.top () is UserList)
         {
             var user_list = stack.top () as UserList;
-            if (!user_list.show_hidden_users)
+            var shift_mask = Gdk.ModifierType.CONTROL_MASK | Gdk.ModifierType.MOD1_MASK;
+            var control_mask = Gdk.ModifierType.SHIFT_MASK | Gdk.ModifierType.MOD1_MASK;
+            var alt_mask = Gdk.ModifierType.CONTROL_MASK | Gdk.ModifierType.SHIFT_MASK;
+            if (((event.keyval == Gdk.Key.Shift_L || event.keyval == Gdk.Key.Shift_R) && (event.state & shift_mask) == shift_mask) ||
+                ((event.keyval == Gdk.Key.Control_L || event.keyval == Gdk.Key.Control_R) && (event.state & control_mask) == control_mask) ||
+                ((event.keyval == Gdk.Key.Alt_L || event.keyval == Gdk.Key.Alt_R) && (event.state & alt_mask) == alt_mask))
             {
-                var shift_mask = Gdk.ModifierType.CONTROL_MASK | Gdk.ModifierType.MOD1_MASK;
-                var control_mask = Gdk.ModifierType.SHIFT_MASK | Gdk.ModifierType.MOD1_MASK;
-                var alt_mask = Gdk.ModifierType.CONTROL_MASK | Gdk.ModifierType.SHIFT_MASK;
-                if (((event.keyval == Gdk.Key.Shift_L || event.keyval == Gdk.Key.Shift_R) && (event.state & shift_mask) == shift_mask) ||
-                    ((event.keyval == Gdk.Key.Control_L || event.keyval == Gdk.Key.Control_R) && (event.state & control_mask) == control_mask) ||
-                    ((event.keyval == Gdk.Key.Alt_L || event.keyval == Gdk.Key.Alt_R) && (event.state & alt_mask) == alt_mask))
-                {
-                    debug ("Hidden user key combination detected");
-                    user_list.show_hidden_users = true;
-                    return true;
-                }
+                debug ("Hidden user key combination detected");
+                user_list.show_hidden_users = ! user_list.show_hidden_users;
+                return true;
             }
         }
         else if (stack.top () is SessionList) {