diff --git a/src/lib/WPXContentListener.cpp b/src/lib/WPXContentListener.cpp

index ab0f9b1..0b559e6 100644

--- a/src/lib/WPXContentListener.cpp

+++ b/src/lib/WPXContentListener.cpp

@@ -23,6 +23,7 @@

  * Corel Corporation or Corel Corporation Limited."

  */

+#include <cstddef>

 #include "WPXContentListener.h"

 #include "WPXPageSpan.h"

 #include "libwpd_internal.h"

diff --git a/src/lib/WPXTable.cpp b/src/lib/WPXTable.cpp

index 0ad202a..3ff35e1 100644

--- a/src/lib/WPXTable.cpp

+++ b/src/lib/WPXTable.cpp

@@ -25,6 +25,8 @@

  * Corel Corporation or Corel Corporation Limited."

  */

+#include <cstddef>

+

 #include "WPXTable.h"

 #include "libwpd_internal.h"