diff --git a/doc/Tutorials/working-with-algorithms-and-generators.md b/doc/Tutorials/working-with-algorithms-and-generators.md
index ef15a2d..46e3f33 100644
--- a/doc/Tutorials/working-with-algorithms-and-generators.md
+++ b/doc/Tutorials/working-with-algorithms-and-generators.md
@@ -18,7 +18,7 @@ an algorithm. It contains two methods :
 * ``init( Graph g )``, which is the initialization step of the algorithm ;
 * ``compute()``, which launches the algorithm.
 
-### Why does we not just use a ``compute(Graph)`` method ?
+### Why do we not just use a ``compute(Graph)`` method ?
 
 The initialization step and computing step are located in different methods
 because you may have to make a new computation of your algorithm without