diff --git a/include/tools_share/tbbr_oid.h b/include/tools_share/tbbr_oid.h
index 37d87d3..c789f79 100644
--- a/include/tools_share/tbbr_oid.h
+++ b/include/tools_share/tbbr_oid.h
@@ -7,6 +7,8 @@
 #ifndef TBBR_OID_H
 #define TBBR_OID_H
 
+#define	MAX_OID_NAME_LEN	30
+
 /*
  * The following is a list of OID values defined and reserved by ARM, which
  * are used to define the extension fields of the certificate structure, as