diff --git a/backupninja/files/gss_kdestroy b/backupninja/files/gss_kdestroy
index 1733cf4..745df1c 100644
--- a/backupninja/files/gss_kdestroy
+++ b/backupninja/files/gss_kdestroy
@@ -1,2 +1,3 @@
+export KRB5CCNAME=/tmp/krb5cc_backupninja
 kdestroy
 
diff --git a/backupninja/files/gss_kinit b/backupninja/files/gss_kinit
index 8eec1b3..6ac9044 100644
--- a/backupninja/files/gss_kinit
+++ b/backupninja/files/gss_kinit
@@ -1,3 +1,4 @@
 {%- from "backupninja/map.jinja" import client with context -%}
+export KRB5CCNAME=/tmp/krb5cc_backupninja
 kinit -kt {{ client.target.auth.gss.get("keytab", "/etc/krb5.keytab") }} {{ client.target.auth.gss.get("principal", "host/$(hostname -f)") }}