diff --git a/cpp/VSLAMConfig.h b/cpp/VSLAMConfig.h
index d9601d5da..071a7bd39 100644
--- a/cpp/VSLAMConfig.h
+++ b/cpp/VSLAMConfig.h
@@ -31,6 +31,8 @@ class VSLAMConfig : Testable<VSLAMConfig> {
 
  public:
   typedef std::map<std::string, Vector>::const_iterator const_iterator;
+  typedef PoseMap::const_iterator const_Pose_iterator;
+  typedef PointMap::const_iterator const_Point_iterator;
   /**
    * default constructor
    */