diff --git a/src/windowsystem/windowsystem.cpp b/src/windowsystem/windowsystem.cpp
--- a/src/windowsystem/windowsystem.cpp
+++ b/src/windowsystem/windowsystem.cpp
@@ -438,6 +438,9 @@
     case NET::Notification:
         role = KWayland::Client::PlasmaShellSurface::Role::Notification;
         break;
+    case NET::Tooltip:
+        role = KWayland::Client::PlasmaShellSurface::Role::ToolTip;
+        break;
     default:
         return;
     }