diff --git a/client_machine.cpp b/client_machine.cpp
index c7821b4629..6c12a2b8cd 100644
--- a/client_machine.cpp
+++ b/client_machine.cpp
@@ -28,6 +28,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <QFutureWatcher>
 // system
 #include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
 #include <netdb.h>
 
 namespace KWin {
diff --git a/tests/test_client_machine.cpp b/tests/test_client_machine.cpp
index 1129c91b39..4f7125e21f 100644
--- a/tests/test_client_machine.cpp
+++ b/tests/test_client_machine.cpp
@@ -28,6 +28,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <xcb/xcb.h>
 // system
 #include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
 #include <netdb.h>
 
 namespace KWin {