diff --git a/lib/krb5/keytab_memory.c b/lib/krb5/keytab_memory.c
index fe20e2c7b..c89c55b73 100644
--- a/lib/krb5/keytab_memory.c
+++ b/lib/krb5/keytab_memory.c
@@ -152,7 +152,7 @@ mkt_remove_entry(krb5_context context,
     return 0;
 }
 
-krb5_kt_ops krb5_mkt_ops = {
+const krb5_kt_ops krb5_mkt_ops = {
     "MEMORY",
     mkt_resolve,
     mkt_get_name,