diff --git a/src/core/drmdevice.h b/src/core/drmdevice.h
index e5887b3b32..f56bbe4a01 100644
--- a/src/core/drmdevice.h
+++ b/src/core/drmdevice.h
@@ -9,6 +9,7 @@
 #pragma once
 
 #include <QString>
+#include <sys/types.h>
 
 #include "graphicsbufferallocator.h"
 #include "kwin_export.h"