diff --git a/Propellor/Property/Docker.hs b/Propellor/Property/Docker.hs
index 659c39e..da9ac36 100644
--- a/Propellor/Property/Docker.hs
+++ b/Propellor/Property/Docker.hs
@@ -231,6 +231,7 @@ runningContainer cid@(ContainerId hn cn) image containerprops = containerDesc ci
 			if runningident == Just ident
 				then return NoChange
 				else do
+					print "container parameters changed"
 					void $ stopContainer cid
 					oldimage <- fromMaybe image <$> commitContainer cid
 					void $ removeContainer cid