diff --git a/espeakup.h b/espeakup.h
index 2d6210a..600c23a 100644
--- a/espeakup.h
+++ b/espeakup.h
@@ -20,6 +20,9 @@
 #ifndef __ESPEAKUP_H
 #define __ESPEAKUP_H
 
+/* This was added for gcc 4.3 */
+#include <stddef.h>
+
 #include <espeak/speak_lib.h>
 
 enum command_t {