diff --git a/src/wayland/clientconnection.h b/src/wayland/clientconnection.h
index 151b0303f7..08f2321541 100644
--- a/src/wayland/clientconnection.h
+++ b/src/wayland/clientconnection.h
@@ -20,6 +20,8 @@ License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 #ifndef KWAYLAND_SERVER_CLIENTCONNECTION_H
 #define KWAYLAND_SERVER_CLIENTCONNECTION_H
 
+#include <sys/types.h>
+
 #include <QObject>
 
 #include <KWayland/Server/kwaylandserver_export.h>