diff --git a/srcdate.h b/srcdate.h
index 18d5f98..cb2863f 100644
--- a/srcdate.h
+++ b/srcdate.h
@@ -1 +1,3 @@
-char src_date[]="20110312";
\ No newline at end of file
+#ifndef __SRCDATE__
+#define __SRCDATE__ "20110312"
+#endif