diff --git a/BGL/doc/BGL/Concepts/MutableFaceGraph.h b/BGL/doc/BGL/Concepts/MutableFaceGraph.h
index b9ca68eb375..464bd6547fa 100644
--- a/BGL/doc/BGL/Concepts/MutableFaceGraph.h
+++ b/BGL/doc/BGL/Concepts/MutableFaceGraph.h
@@ -23,7 +23,7 @@ the requirement for operations to add faces and to modify face-halfedge relation
 
 Expression              | returns           | Description                           
 ----------------------- | ------------      | -----------
-`add_face(g)`           | `face_descriptor` | Adds a new face to the graph without inializing the connectivity.
+`add_face(g)`           | `face_descriptor` | Adds a new face to the graph without initializing the connectivity.
 `remove_face(f, g)`     | `void`            | Removes `f` from the graph.
 `set_face(h, f, g)`     | `void`            | Sets the corresponding face of `h` to `f`.
 `set_halfedge(f, h, g)` | `void`            | Sets the corresponding halfedge of `f` to `h`.
diff --git a/BGL/doc/BGL/Concepts/MutableHalfedgeGraph.h b/BGL/doc/BGL/Concepts/MutableHalfedgeGraph.h
index b9085f3b52d..d1742a93f3e 100644
--- a/BGL/doc/BGL/Concepts/MutableHalfedgeGraph.h
+++ b/BGL/doc/BGL/Concepts/MutableHalfedgeGraph.h
@@ -25,9 +25,9 @@ update the incidence information between vertices and halfedges.
 
 Expression                | returns             | Description                           
 ------------------------- | ------------        | -----------
-`add_vertex(g)`           | `vertex_descriptor` | Adds a new vertex to the graph without inializing the connectivity.
+`add_vertex(g)`           | `vertex_descriptor` | Adds a new vertex to the graph without initializing the connectivity.
 `remove_vertex(v, g)`     | `void`              | Removes `v` from the graph.
-`add_edge(g)`             | `edge_descriptor`   | Adds two opposite halfedges to the graph without inializing the connectivity.
+`add_edge(g)`             | `edge_descriptor`   | Adds two opposite halfedges to the graph without initializing the connectivity.
 `remove_edge(e, g)`       | `void`              | Removes the two halfedges corresponding to `e` from the graph.
 `set_target(h, v, g)`     | `void`              | Sets the target vertex of `h` and the source of `opposite(h)` to `v`.
 `set_halfedge(v, h, g)`   | `void`              | Sets the halfedge of `v` to `h`. The target vertex of `h` must be `v`.