diff --git a/lib/krb5/krb5.h b/lib/krb5/krb5.h
index 1bc6a2ee6..9ca5a9d80 100644
--- a/lib/krb5/krb5.h
+++ b/lib/krb5/krb5.h
@@ -251,7 +251,8 @@ typedef enum krb5_keytype {
     KEYTYPE_AES128	= 17,
     KEYTYPE_AES256	= 18,
     KEYTYPE_ARCFOUR	= 23,
-    KEYTYPE_ARCFOUR_56	= 24
+    KEYTYPE_ARCFOUR_56	= 24,
+    KEYTYPE_RC2		= -0x1005
 } krb5_keytype;
 
 typedef EncryptionKey krb5_keyblock;