diff --git a/lib/hypervisor/hv_xen.py b/lib/hypervisor/hv_xen.py
index d2638f94c203b1b3e860bcc98ac68fb04f9e351f..3468fbe0964f4a95690503fa1844ae50e3613191 100644
--- a/lib/hypervisor/hv_xen.py
+++ b/lib/hypervisor/hv_xen.py
@@ -34,6 +34,11 @@ from ganeti import netutils
 from ganeti import objects
 
 
+XEND_CONFIG_FILE = "/etc/xen/xend-config.sxp"
+XL_CONFIG_FILE = "/etc/xen/xl.conf"
+VIF_BRIDGE_SCRIPT = "/etc/xen/scripts/vif-bridge"
+
+
 class XenHypervisor(hv_base.BaseHypervisor):
   """Xen generic hypervisor interface
 
@@ -46,9 +51,9 @@ class XenHypervisor(hv_base.BaseHypervisor):
   REBOOT_RETRY_INTERVAL = 10
 
   ANCILLARY_FILES = [
-    "/etc/xen/xend-config.sxp",
-    "/etc/xen/xl.conf",
-    "/etc/xen/scripts/vif-bridge",
+    XEND_CONFIG_FILE,
+    XL_CONFIG_FILE,
+    VIF_BRIDGE_SCRIPT,
     ]
 
   @staticmethod