diff --git a/lib/krb5/principal.c b/lib/krb5/principal.c
index 6fdf7e4f1..b381c0373 100644
--- a/lib/krb5/principal.c
+++ b/lib/krb5/principal.c
@@ -631,7 +631,7 @@ krb5_principal_match(krb5_context context,
 }
 
 
-struct v4_name_convert {
+static struct v4_name_convert {
     const char *from;
     const char *to; 
 } default_v4_name_convert[] = {