diff --git a/lemon/maps.h b/lemon/maps.h
--- a/lemon/maps.h
+++ b/lemon/maps.h
@@ -1683,6 +1683,11 @@
 
   }
 
+  /// @}
+
+  /// \addtogroup maps
+  /// @{
+
   /// \brief Writable bool map for logging each \c true assigned element
   ///
   /// A \ref concepts::WriteMap "writable" bool map for logging
@@ -1775,6 +1780,11 @@
     return LoggerBoolMap<Iterator>(it);
   }
 
+  /// @}
+
+  /// \addtogroup graph_maps
+  /// @{
+
   /// Provides an immutable and unique id for each item in the graph.
 
   /// The IdMap class provides a unique and immutable id for each item of the
@@ -1882,8 +1892,6 @@
     /// The value type of the InvertableMap.
     typedef typename Map::Value Value;
 
-
-
     /// \brief Constructor.
     ///
     /// Construct a new InvertableMap for the graph.
@@ -2049,8 +2057,6 @@
       return InverseMap(*this);
     }
 
-
-
   };
 
   /// \brief Provides a mutable, continuous and unique descriptor for each