diff --git a/util/ceg/ce_back/obj_back/extnd.c b/util/ceg/ce_back/obj_back/extnd.c
index e486a89c2..f570fa0a6 100644
--- a/util/ceg/ce_back/obj_back/extnd.c
+++ b/util/ceg/ce_back/obj_back/extnd.c
@@ -2,6 +2,7 @@
 #include <em.h>
 #include <out.h>
 #include "header.h"
+#include "data.h"
 #include "mach.h"
 
 /* The extnd_*()s make a name unique. The resulting string is directly stored