diff --git a/exercice_2/README.md b/exercice_2/README.md
index 19c0238..449a21d 100644
--- a/exercice_2/README.md
+++ b/exercice_2/README.md
@@ -1,28 +1,28 @@
 code created by Marti Bosch (marti.bosch@epfl.ch) and Marc Schwaerzel (marc.schwaerzel@epfl.ch)
 # Exercise 1
 # Exercise 2
 exercice 2.1: a good strategy to work both of us on different parts at the same is to define edit the "class Series" together and then do exercice 2 and 3 separately by using the mother/daughter classes as seen in the lecture.
 We thought about this strategy but it was not really conclusive as I (Marc Schwaerzel) started to  implement series as in the exercices of week 5. Finally we simplified things and came back to out initial strategy.
 
 # Exercise 3
 # Exercise 4
 # Exercise 5
 
 # Run the code
 To run the code follow the instructions:
 
 1) create a new directory in the exercice_2 directory and go into that folder:
 	
 	$ mkdir build
 	$ cd build
 
 2) compile the code:
 
 	$ cmake ../
 	$ make
 
-3) run the code with A, B beeng respectively (A: serie_type -- 1 is compute_arithmetic -- 2 is compute_pi, B: maxiter):
+3) run the code with following arguments: --frequency --maxiter --serie_type (pi or arithmetic) --dump_type (print or write):
 
-	$ ./src/main A B
+	$ ./src/main frequency maxiter serie_type dump_type