diff --git a/include/ldap.h b/include/ldap.h
index b655abdc18..2740ccdebc 100644
--- a/include/ldap.h
+++ b/include/ldap.h
@@ -95,7 +95,8 @@ LDAP_BEGIN_DECL
 
 /* 0x16 - 0x2f not defined by current draft */
 #define LDAP_OPT_HOST_NAME			0x0030
-#define	LDAP_OPT_ERROR_NUMBER		0x0031
+#define LDAP_OPT_RESULT_CODE		0x0031
+#define LDAP_OPT_ERROR_NUMBER		LDAP_OPT_RESULT_CODE
 #define LDAP_OPT_ERROR_STRING		0x0032
 #define LDAP_OPT_MATCHED_DN			0x0033