diff --git a/kadmin/get.c b/kadmin/get.c
index 35766aa1b..8613c299f 100644
--- a/kadmin/get.c
+++ b/kadmin/get.c
@@ -632,6 +632,7 @@ list_princs(struct list_options *opt, int argc, char **argv)
 	krb5_warnx(context, "programmer error: sizeof(struct get_options) != sizeof(struct list_options)");
 	return 0;
     }
+    memset(&get_opt, 0, sizeof(get_opt));
     get_opt.long_flag = opt->long_flag;
     get_opt.short_flag = opt->short_flag;
     get_opt.terse_flag = opt->terse_flag;