diff --git a/local/recipes/kde/kf6-kwindowsystem/recipe.toml b/local/recipes/kde/kf6-kwindowsystem/recipe.toml
index da3c4032f1..79fe60a468 100644
--- a/local/recipes/kde/kf6-kwindowsystem/recipe.toml
+++ b/local/recipes/kde/kf6-kwindowsystem/recipe.toml
@@ -15,6 +15,13 @@ dependencies = [
     # find_package(Qt6Qml) via ECMQmlModule. Qt6Qml comes from qtdeclarative, so
     # it must be a dependency or configure fails "Could not find ... Qt6Qml".
     "qtdeclarative",
+    # KWINDOWSYSTEM_WAYLAND=ON requires Qt6WaylandClient (qtwayland),
+    # WaylandProtocols (wayland-protocols) and PlasmaWaylandProtocols
+    # (plasma-wayland-protocols). Declare all three so configure's
+    # find_package(... REQUIRED) resolves from this recipe's sysroot.
+    "qtwayland",
+    "wayland-protocols",
+    "plasma-wayland-protocols",
     "kf6-extra-cmake-modules",
 ]
 script = """