diff --git a/libwpd/src/lib/WPXTable.h b/libwpd/src/lib/WPXTable.h

index bdbaf79..f7508a0 100644

--- a/libwpd/src/lib/WPXTable.h

+++ b/libwpd/src/lib/WPXTable.h

@@ -36,6 +36,7 @@

 #ifndef _WPXTABLE_H

 #define _WPXTABLE_H

+#include <stddef.h>

 #include <vector>

 struct WPXTableCell