diff --git a/include/bl_common.h b/include/bl_common.h
index aad3d22..8139282 100644
--- a/include/bl_common.h
+++ b/include/bl_common.h
@@ -140,6 +140,7 @@
 			      void *first_arg,
 			      void *second_arg);
 extern unsigned long *get_el_change_mem_ptr(void);
+extern const char build_message[];
 
 #endif /*__ASSEMBLY__*/