Index: boost/graph/kamada_kawai_spring_layout.hpp
===================================================================
--- boost/graph/kamada_kawai_spring_layout.hpp	(revision 80813)
+++ boost/graph/kamada_kawai_spring_layout.hpp	(working copy)
@@ -475,12 +475,12 @@
    * from every vertex to every other vertex, which is computed in the
    * first stages of the algorithm. This value's type must be a model
    * of BasicMatrix with value type equal to the value type of the
-   * weight map. The default is a a vector of vectors.
+   * weight map. The default is a vector of vectors.
    *
    * \param spring_strength (UTIL/OUT) will be used to store the
    * strength of the spring between every pair of vertices. This
    * value's type must be a model of BasicMatrix with value type equal
-   * to the value type of the weight map. The default is a a vector of
+   * to the value type of the weight map. The default is a vector of
    * vectors.
    *
    * \param partial_derivatives (UTIL) will be used to store the