diff --git a/helpers/xclipboardsync/waylandclipboard.cpp b/helpers/xclipboardsync/waylandclipboard.cpp
index 7702089087..2362304357 100644
--- a/helpers/xclipboardsync/waylandclipboard.cpp
+++ b/helpers/xclipboardsync/waylandclipboard.cpp
@@ -35,6 +35,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <QMimeType>
 #include <qplatformdefs.h>
 
+#include <errno.h>
 #include <unistd.h>
 
 using namespace KWayland::Client;