diff --git a/src/wayland/server/xdgoutput_interface.cpp b/src/wayland/server/xdgoutput_interface.cpp
index e32ccf98db..b2b2cba979 100644
--- a/src/wayland/server/xdgoutput_interface.cpp
+++ b/src/wayland/server/xdgoutput_interface.cpp
@@ -25,6 +25,8 @@ License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
 #include <wayland-xdg-output-server-protocol.h>
 
+#include <QHash>
+
 namespace KWayland
 {
 namespace Server