diff --git a/etc/tempest.conf.sample b/etc/tempest.conf.sample
index b3aca42..56172f8 100644
--- a/etc/tempest.conf.sample
+++ b/etc/tempest.conf.sample
@@ -161,8 +161,9 @@
 # Timeout for Ironic power transitions. (integer value)
 #power_timeout = 60
 
-# Timeout for unprovisioning an Ironic node. (integer value)
-#unprovision_timeout = 60
+# Timeout for unprovisioning an Ironic node. Takes longer since Kilo
+# as Ironic performs an extra step in Node cleaning. (integer value)
+#unprovision_timeout = 300
 
 
 [boto]
diff --git a/tempest/config.py b/tempest/config.py
index 603ccd2..bbd6772 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -1114,8 +1114,10 @@
                default=60,
                help="Timeout for Ironic power transitions."),
     cfg.IntOpt('unprovision_timeout',
-               default=60,
-               help="Timeout for unprovisioning an Ironic node.")
+               default=300,
+               help="Timeout for unprovisioning an Ironic node. "
+                    "Takes longer since Kilo as Ironic performs an extra "
+                    "step in Node cleaning.")
 ]
 
 negative_group = cfg.OptGroup(name='negative', title="Negative Test Options")