diff --git a/src/plugins/platforms/kms/qkmsdevice.h b/src/plugins/platforms/kms/qkmsdevice.h
index 14962189e9..638fe780fe 100644
--- a/src/plugins/platforms/kms/qkmsdevice.h
+++ b/src/plugins/platforms/kms/qkmsdevice.h
@@ -42,6 +42,8 @@
 #ifndef QKMSDEVICE_H
 #define QKMSDEVICE_H
 
+#include <stddef.h>
+
 extern "C" {
 #include <gbm.h>
 }
diff --git a/src/plugins/platforms/kms/qkmsintegration.cpp b/src/plugins/platforms/kms/qkmsintegration.cpp
index 0405330617..91e8ae42b4 100644
--- a/src/plugins/platforms/kms/qkmsintegration.cpp
+++ b/src/plugins/platforms/kms/qkmsintegration.cpp
@@ -49,7 +49,6 @@
 #include "qkmsudevlistener.h"
 #include "qkmsudevdrmhandler.h"
 
-#include <QtPlatformSupport/private/qgenericunixprintersupport_p.h>
 #include <QtPlatformSupport/private/qgenericunixeventdispatcher_p.h>
 #include <QtPlatformSupport/private/qgenericunixfontdatabase_p.h>
 #include <QtGui/private/qguiapplication_p.h>