diff --git a/src/xenconfig/xen_xm.c b/src/xenconfig/xen_xm.c
index fe46d9174404392d8e83c8d8296f4a548b7cb447..1e57e2488ee8ab336cd520a4cc275a72fa2aca6a 100644
--- a/src/xenconfig/xen_xm.c
+++ b/src/xenconfig/xen_xm.c
@@ -201,6 +201,7 @@ xenParseXMDisk(virConfPtr conf, virDomainDefPtr def, int xendConfigVersion)
             skipdisk:
             list = list->next;
             virDomainDiskDefFree(disk);
+            disk = NULL;
         }
     }