diff --git a/README.md b/README.md
index 989de8dc6dbf095888381cc56a4be3510821a3dc..1f2a258f48dc052cf35cf68df945ab571eda5c20 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,16 @@ blc_channel
 -----------
 
     cd blc/python
-    python3 blc_channel
+    python3 blc_channel.py
+
+you should see: 
+
+'''We create a blc_channel of type unsigned char and size 3x2 on the POSIX system (shared memory)
+We write 7 in column 2
+We open the shared blc_channel to read it
+We check that we have the same values
+type UIN8 format RGB3 length 6
+[0, 0, 7, 0, 0, 0]
+We remove our shared memory from the system '''