Index: Widgets/AxeWindow.c
--- Widgets/AxeWindow.c.orig
+++ Widgets/AxeWindow.c
@@ -27,6 +27,7 @@
  *          University of Newcastle upon Tyne, UK
  */
 
+#include <stdlib.h>
 #include <X11/Xos.h>
 #include <X11/IntrinsicP.h>	
 #include <X11/StringDefs.h>