diff --git a/groups.cabal b/groups.cabal
--- a/groups.cabal
+++ b/groups.cabal
@@ -1,5 +1,5 @@
 name:                groups
-version:             0.2.0.0
+version:             0.2.0.1
 synopsis:            Haskell 98 groups
 description:         
   Haskell 98 groups. A group is a monoid with invertibility.
diff --git a/src/Data/Group.hs b/src/Data/Group.hs
--- a/src/Data/Group.hs
+++ b/src/Data/Group.hs
@@ -5,6 +5,7 @@
 -- |A 'Group' is a 'Monoid' plus a function, 'invert', such that: 
 --
 -- @a \<> invert a == mempty@
+--
 -- @invert a \<> a == mempty@
 class Monoid m => Group m where
   invert :: m -> m